# Texas Instruments TI-30X II

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### About

**Texas Instruments DHTI30XIIS TI-30X IIS Scientific Calc**

Scientific - Texas Instruments

Inc. TI-30X IIS is a scientific calculator with 2 display lines - displaying 10 characters - with 5 items memory.

__Details__**Brand**: Texas Instruments

**Part Numbers**: DHTI30XIIS, DH_TI30XIIS

**UPC**: 033317198726

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### User reviews and opinions

NOMS |
12:11pm on Tuesday, October 26th, 2010 |

recommended by math teacher at school above casio and other brands; best price through JR; [...] highly recommended Adequate Capabilities". kids had no problem jumping on and using this tool- intuitive design and programming- 8th graders loved them and I loved not needing to replace the ba... i find the easy to use conversion functions to be the most helpful. You can change binary to hex to decimal. | |

wliao |
4:06pm on Thursday, October 21st, 2010 |

when its at mathprint mode, it looks more like a textbook question instead of stuff thats confusing Attractive Design, Clear Display, Compact Size. This calculator is used in the university testing center, I got one so I would be familiar with it. It is a good calculator and easy to use. | |

dimitri |
1:50am on Friday, September 24th, 2010 |

The Texas Instruments TI 30X IIS Scientific Calculator, 10 Digit LCD is fantastic. I have used this calculator for Algebra one and two. | |

mrthaggar |
2:57pm on Wednesday, September 8th, 2010 |

Very easy to use and the buttons have a solid feel. I also like the large display so you can easily see both the equation and the answer. | |

hillerd |
7:41am on Tuesday, August 31st, 2010 |

I am a student who uses this product often. This calculator always gets the job done and is as powerful as it is reliable. Adequate Capabilities. | |

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5:00am on Monday, August 9th, 2010 |

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redsri |
10:03pm on Wednesday, July 14th, 2010 |

Great Product and Great Price Used in Math and Science class. Adequate Capabilities,Attractive Design,Clear Display,Compact Size,Easy To Use,Long Battery Life. the color is fun, it does what I need it to do-calculate numbers Adequate Capabilities,Attractive Design,Clear Display,Easy To Use Bulky | |

VMSK27164 |
12:15am on Friday, May 28th, 2010 |

If your looking for the best at the best price then look no further!!!! J&R has offered the best at the lowest price! Adequate Capabilities". | |

npillot |
1:52pm on Monday, May 24th, 2010 |

The 30XIIS is simply the best calculator you can buy beating out any other calculator at any other price. i have been using this for 3 years and it never gave me a problem! it is definatly the best school supply ever. i would realy recommend it. | |

Abscissa |
2:15pm on Wednesday, April 28th, 2010 |

The Texas Instruments TI 30X IIS Scientific Calculator, 10 Digit LCD is fantastic. I have used this calculator for Algebra one and 2. I purchased the TI-30X IIS Scientific Calculator thinking that I could use it to help me with some difficult algebra homework but when I was not able ... | |

LHL |
6:28pm on Sunday, April 11th, 2010 |

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stevek |
6:33am on Saturday, March 20th, 2010 |

I really enjoy working with this calculator. It has many functions that the 4 function can not do. One example is the ability to input fractions. |

Comments posted on www.ps2netdrivers.net are solely the views and opinions of the people posting them and do not necessarily reflect the views or opinions of us.

### Documents

#### TI-30X S:

A Guide for Teachers

Developed by Texas Instruments Incorporated

Activities developed by Gary Hanson and Aletha Paskett

Illustrated by Jay Garrison

#### About the Authors

Gary Hanson and Aletha Paskett are math teachers in the Jordan Independent School District in Sandy, Utah. They developed the Activities section and assisted in evaluating the appropriateness of the examples in the How to Use the TI-30X S section of this guide.

Important Notice Regarding Book Materials

Texas Instruments makes no warranty, either expressed or implied, including but not limited to any implied warranties of merchantability and fitness for a particular purpose, regarding any programs or book materials and makes such materials available solely on an as-is basis. In no event shall Texas Instruments be liable to anyone for special, collateral, incidental, or consequential damages in connection with or arising out of the purchase or use of these materials, and the sole and exclusive liability of Texas Instruments, regardless of the form of action, shall not exceed the purchase price of this book. Moreover, Texas Instruments shall not be liable for any claim of any kind whatsoever against the use of these materials by any other party. Note: Using calculators other than the TI-30X IIS may produce results different from those described in these materials.

Permission To Reprint or Photocopy

Permission is hereby granted to teachers to reprint or photocopy in classroom, workshop, or seminar quantities, the pages or sheets in this book that carry a Texas Instruments copyright notice. These pages are designed to be reproduced by teachers for use in classes, workshops, or seminars, provided each copy made shows the copyright notice. Such copies may not be sold, and further distribution is expressly prohibited. Except as authorized above, prior written permission must be obtained from Texas Instruments Incorporated to reproduce or transmit this work or portions thereof in any other form or by any other electronic or mechanical means, including any information storage or retrieval system, unless expressly permitted by federal copyright law. Send inquiries to this address: Texas Instruments Incorporated 7800 Banner Drive, M/S 3918 Dallas, TX 75251 Attention: Manager, Business Services Note: If you request photocopies of all or portions of this book from others, you must include this page (with the permission statement above) to the supplier of the photocopying services.

www.ti.com/calc ti-cares@ti.com Copyright 1999 Texas Instruments Incorporated. Except for the specific rights granted herein, all rights are reserved. Printed in the United States of America. Automatic Power Down, APD, and EOS are trademarks of Texas Instruments Incorporated.

1999 TEXAS INSTRUMENTS INCORPORATED

TI-30X S: A Guide for Teachers

#### About the Teacher Guide

How the Teacher Guide is Organized

This guide consists of two sections: Activities and How to Use the TI-30X S. The Activities section is a collection of activities for integrating the TI-30X S into mathematics instruction. The How To Use the TI-30X S section is designed to help you teach students how to use the calculator.

#### Things to Keep in Mind

While many of the examples on the transparency masters may be used to develop mathematical concepts, they were not designed specifically for that purpose. For maximum flexibility, each example and activity is independent of the others. Select the transparency master appropriate for the key you are teaching, or select the activity appropriate for the mathematical concept you are teaching. If an example does not seem appropriate for your curriculum or grade level, use it to teach the function of a key (or keys), and then provide relevant examples of your own. To ensure that everyone starts at the same point, have students reset the calculator by pressing & and simultaneously or by pressing % and then selecting Y (yes).

Activities The activities are designed to be teacherdirected. They are intended to help develop mathematical concepts while incorporating the TI-30X S as a teaching tool. Each activity is self-contained and includes the following:

An overview of the mathematical purpose of the activity. The mathematical concepts being developed. The materials needed to perform the activity. The detailed procedure, including step-bystep TI-30X S key presses. A student activity sheet.

Conventions Used in the Teacher Guide

In the text, brackets [ ] around a keys symbol/name indicate that the key is a second, or alternate, function. For example: Z On the transparency masters, second functions are shown just as they appear on the keyboard. For example:

(rounded to 3 decimal places)

2. Make a list of your players in order, from highest to lowest.

Player 1 Player 2 Player 3 Player 4 Player 5 ____________________ ____________________ ____________________ ____________________ ____________________

Player 6 Player 7 Player 8 Player 9

____________________ ____________________ ____________________ ____________________

Star Voyage Scientific Notation

Students investigate scientific notation by changing numbers into scientific notation, and then using them in calculations.

Math Concepts scientific notation addition division Materials TI-30X S pencil student activity

Set up the activity by telling your students: The standard form for scientific notation is a Q 10 n, where a is greater than or equal to 1 and less than 10, and n is an integer. 1. Have students practice writing the following numbers in scientific notation using pencil and paper. a. b. c. d. 000 0.00000000000234 0.0000000157 9.3 Q 107 3.84 Q 1011 2.34 Q 10-12 1.57 Q 10-8

#### 12000000

2. Have students change the following numbers into scientific notation using the TI-30X S. a. b. c. d. 0.0000034 0.000000004 1.2 Q 9.74 Q 108 3.4 Q 10-Q 10-9 107

#### 2. Press % d.

FLO SCI ENG

3. Press " < <.

#### 12000000 1.2x1007

Answers assume the default floating decimal setting.

4. Now, just type the next number and press <.

3. Have students change the following numbers into floating decimal (standard notation). a. b. c. d. 5.8 Q 7.32 Q 105 6.2 Q 10-Q 10-0.0000062 0.00000003

#### 1. Enter 5.8; press % C.

2. Enter 7; press % d.

#### 3. Press !.

To enter a negative number, press M and then enter the number.

#### 4. Press < <.

5.87 58000000.

5. Type the next number and press <. TI-30X S: A Guide for Teachers

Present the following problem to students: You are a captain of a starship. You have been assigned to go to Alpha Centauri and you have 5 years to get there. The distance from the sun to Alpha Centauri is 2.5 x miles. The distance from the earth to the sun is approximately 9.3 x miles. Your ship can travel at the speed of light. You know that light can travel a distance of 6 x miles in 1 light year. Will you be able to get to Alpha Centauri on time?

2. Your friend took a test on the day you were absent and scored 95. What score do you need to get so that you are the winner? Your friends new average _______________________ Your new score _______________________

Heart Rates 1-Variable Statistics

Students use the statistics functions of the TI-30XS calculator to investigate the effect of exercise on heart rate.

Math Concepts mean, minimum, maximum, and range Materials TI-30X S stopwatch or a watch with a second hand student activity

Students may be placed in smaller groups for this activity to minimize the amount of data to be entered. Ask students:

What do you think the average heart rate is for someone your age? What about after exercising?

Have students complete the following investigation to check their estimations. 1. Have students check their resting heart rates by timing their pulse for 1 minute. (You could have them time for 10 seconds and then multiply by 6, but this could be the quietest minute of your day!) 2. Collect data on the chart. Enter each students heart rate and a mark in the frequency column. As other students have the same heart rate, add another tally mark in the frequency column. 3. Enter the heart rate data into the TI-30X S. a. Enter the first heart rate on the chart as the first X value, and the number of tallies for that heart rate as the frequency. b. You must press $ between entries. For example, enter the first heart rate, and then press $. Enter the first frequency, and then press $. For example, assume a class of 22 students:

Rate Students Rate Students 1. Press % t <. 2. Press v to enter the heart rates and frequencies.

3. Enter first heart rate and press $.

4. Continue entering until you have entered all the heart rates and frequencies.

4. Check the statistics calculations. After students display x (Sigma x), explain that x is the sum of all the heart rates. Ask students:

#### 1. Press u.

n Sx x 22.

How many heartbeats were there in one minute? Is the average heart rate higher or lower than you expected?

Note: If the class (or individual) heart rate after jumping jacks is less than 90, then you are in great shape. If it is higher than 125, then you are in poor shape.

11. Now make a histogram for each of the 3 sets of data you collected. Resting Running Jumping

12. How are the histograms the same? How are they different? _____________ _________________________________________________________________ _________________________________________________________________ 13. Is the data grouped the same or is it more spread out in one graph compared to another? _____________________________________________ _________________________________________________________________ _________________________________________________________________

WNBA Stats 2-Variable Statistics

Students use WNBA statistics to explore the relationship between 2 variables. They use the TI-30X S to compute the regression equation and evaluate some values.

Math Concepts 2-variable statistics Materials TI-30X S pencils student activity

Present the following problem to students: Do you think WNBA (Womens National Basketball Association) playing time (in minutes per game) is related to how many points a player scores? Do you think it is related to how many rebounds a player gets? Or is it related to the players field-goal percentage?

1. Put the calculator in STAT mode and choose 2-VAR statistics.

1. Press % t and then ".

#### 1-VAR 2-VAR

2. Press < to select 2-VAR.

2. Using the table in the activity, enter the data. Enter points per game as the X-variable and minutes per game (playing time) as the Y-variable.

#### 1. Press v.

2. Enter 10.1 (points per game for the first player, Rhonda Mapp).

#### X1=10.1

3. Press $.

4. Enter 21.7 (minutes per game for Rhonda Mapp).

#### Y1=21.7

5. Press $ to enter data for the second player. 6. Enter data for each player in the table. Press $ after entering each data point.

WNBA Stats 2-Variable Statistics Continued)

3. Calculate the statistical data. You may want to fix the decimal to 2 places before doing the statistical calculations. Ask students:

#### Points per Game

10.1 13.3 6.8 22.7 12.9 12.9 6.7 4.8 11.7 1.9 4.9 3.3

#### Rebounds per Game

4.3 6.5 3.6 3.7 9.3 7.6 3.3.8 6.9.9 1.9 1.9

#### Minutes per Game

21.7 31.6 21.33.16.7 13.2 29.2 8.1 13.6 6.5

Use the calculator to investigate the correlation of the other data in the table such as the relation of field-goal percentage to minutes per game, or rebounds per game to minutes per game. (Remember, since you have already entered the minutes per game in Y, you only need to enter the new data in X.) 1. What is the average field-goal percentage? 2. Write the equation for the line of best fit. 3. Write the correlation coefficient. 4. What is the average number of rebounds per game? 5. Write the equation for the line of best fit. 6. What is the total number of rebounds per game for all the given players? 7. Write the equation for the line of best fit. 8. Write the correlation coefficient. 9. Which 2 variables have the closest correlation? (That is, which have the correlation coefficient closest to 1 or 1?)

TI-30X S Basic Operations Clear, Insert, and Delete Basic Math Order of Operations and Parentheses Constant Decimals and Decimal Places Memory Fractions Pi Powers, Roots, and Reciprocals Probability Statistics Trigonometry Notation Logarithms and Antilogarithms Angle Settings and Conversions Polar and Rectangular Conversions Hyperbolics 98 100

TI-30X S Basic Operations

1. & turns on the calculator. 2. % turns on the 2nd indicator and accesses the function shown above the next key you press. 3. % ' turns off the calculator and clears the display. 4. < completes the operation or executes the command. 5. % i recalls the most recently calculated result and displays it as Ans. 6. ! and " move the cursor left and right to scroll the entry line. Press % ! or % " to scroll to the beginning or end of the entry line. # and $ move the cursor up and down through previous entries. % # or % $ scroll to the beginning or end of history.

7. % displays the RESET menu. RESET: N Y Press < when N (no) is underlined to return to the previous screen without resetting the calculator. Press < when Y (yes) is underlined to reset the calculator. The message MEM CLEARED is displayed.

3. % j converts a fraction to its decimal equivalent or changes a decimal to its fractional equivalent, if possible.

Calculations involving a fraction and a decimal will always display results as decimals. For a mixed number, the whole number can be up to 3 digits, the numerator can be up to 3 digits, and the denominator can be any number through 1000. For a simple fraction, the numerator can be up to 6 digits and the denominator can be any number through 1000.

At the party, you ate 5/6 of the pepperoni pizza and 1/10 of the sausage pizza. How much pizza did you eat?

#### 56+DEG 15 /

5N6T1 N 10 <

#### Mixed Numbers

A baby weighed 4 3/8 kilograms at birth. In the next 6 months, she gained 2 3/4 kilograms. How much does she weigh?

#### 438+234 7DEG 1/8

4N3N 8T2N3 N4<

Mixed Number to Fraction, Fraction to Mixed Number

Sam is making his birthday cake. The recipe calls for 3 1/2 cups of flour. He has only a 1/2-cup measuring cup. To find out how many times Sam must use his measuring cup, change the mixed number to a fraction. 3 1/2 1/2 = 7

#### 3N1N2 %

312' A /c , ' /e

312' A /c , ' /e 7 DEG 2 / Ans' A /c , ' /e 3DEG 1/2

Show the mixed number again.

#### % <

Fraction to Decimal

Juan swims 20 laps in 5.72 minutes. Mary swims 20 laps in 5 3/4 minutes. Change Marys time to a decimal to determine who swims faster.

#### 534.F, 'D

5N3N 4% <

#### 534.F, 'D 5.75 DEG

Decimal to Fraction

Change 2.25 to its fractional equivalent.

#### 2.25.F, 'D 214 DEG

1. g displays the value of pi rounded to 10 digits (3.141592654).

The examples on the transparency masters assume all default settings. Internally, pi is stored to 13 digits (3. 141592653590). After pressing % , you can select the number of decimal places in 2 ways: Press ! or " to move to the number of decimal places you want, and then press <, or Press the number key that corresponds to the number of decimal places you want. The transparency masters show both ways.

#### Circumference

Use this formula to find the amount of border you need if you want to put a circular border all the way around the tree. C = 2pr = 2 x p x 1.5m

#### 2*p*1.5 9.424777961 DEG

2 V g V 1.5 <

Use this formula to find how much of a lawn would be covered by the sprinkler. Round your answer to the nearest whole number, and then return to Floating Decimal mode. A = pr2 = p x 42

p*42 50.26548246 DEG F0123456789 _

#### gV4F < %

"

#### 50. DEG

p*42 50.26548246 DEG

Powers, Roots, and Reciprocals

1. F squares the value. 2. % b calculates the square root. 3. % c calculates the specified root (x) of the value. 4. a calculates the reciprocal. 5. G raises a value to a specified power.

The examples on the transparency masters assume all default settings. To save the last data point or frequency value entered, you must press < or $. You can change data points once they are entered.

#### Entering 1-VAR Stat Data

Five students took a math test. Using their scores, enter the data points85, 85, 97, 53, 77.

#### 1-VAR- 2-VAR ----DEG

<v 85 $ 2 $ 97 $ $ 53 $ $ 77 <

#### STAT DEG

X 1=85

#### X 2=97

X 3=53

#### X 4=77 77.

Viewing the Data

#### (Cont.)

Find the number of data points (n), the mean (v), the sample standard deviation (Sx), the population standard deviation (sx), the sum of the scores (Gx), and the sum of the squares (Gx2).

n v Sx sx 5. STAT DEG n v Sx sx 79.4 STAT DEG n v Sx sx --

u " " " "

16.39512123 STAT DEG n v Sx sx --

#### 14.66424222 STAT DEG

397. DEG

#### Gx --STAT

32597. DEG

Removing Data Points (Cont.)

Return to the first data point. Display the lowest score, drop it, and then find the new mean (v). Clear all data by exiting STAT mode.

v $$$$ $0< u" % <

#### FRQ=0 0.

n v Sx sx 86. STAT DEG EXIT ST: Y N STAT DEG

#### Entering 2-VAR Stat Data

The table below shows the number of pairs of athletic shoes sold by a small shoe store. Enter this data as the data points.

Month April May Press Total No.(x) Brand A (y) 58 (x1) 35 (y1) 47 (x2) 28 (y2) Display

#### 1-VAR 2-VAR& ----DEG

<v 58 $ 35 $ 47 $ 28 <

#### X 1=58

Y 1 =35

#### X 2 =47

Y 2 =28

#### Y 2 =28 28.

If the store sells 32 pairs of shoes in June, predict the June sales of Brand A. When finished, exit STAT mode and clear all data points.

#### u! < 32 E < % <

y t DEG

y (32) 18.45454545 t DEG EXIT ST: Y N t DEG

#### Trigonometry

1. @ calculates the tangent. 2. % \ calculates the inverse tangent. 3. ? calculates the cosine. 4. % [ calculates the inverse cosine. 5. > calculates the sine. 6. % Z calculates the inverse sine.

The examples on the transparency masters assume all default settings. Before starting a trigonometric calculation, be sure to select the appropriate angle mode setting (degree, radian, or gradientSee Chapter 16, Angle Settings and Conversions). The calculator interprets values according to the current angle-unit mode setting. E ends a trig function.

#### Tangent

Use this formula to find the distance from the lighthouse to the boat. Round your answer to the nearest whole number, and then return to floating decimal mode. D = 78/TAN 27

78/tan (27) 153.0836194 DEG F0123456789 DEG

#### 78 W @ 27 E < %

78/tan (27) 153. FIX DEG

78/tan (27) 153.0836194 DEG

#### Inverse Tangent

Use this formula to find the angle of depression. Round your answer to the nearest tenth, and then return to floating decimal mode. TAN x = 600/2500

tan -1 (600/25 13.49573328 DEG F0123456789 DEG

#### % 600 W 2500 E < %

""

' tan -1 (600/25 13.5 FIX DEG

tan -1 (600/25 13.49573328 DEG

#### Cosine

Use this formula to find how far the base of the ladder is from the house. Round your answer to the nearest whole number, and then return to floating decimal mode. D = 5 x COS 75

5*cos (75) 1.294095226 DEG F0123456789 FIX DEG

#### 5V? 75 E < %

5*cos (75)

#### 1. DEG

5*cos (75) 1.294095226 DEG

#### Inverse Cosine

Use this formula to find the angle of the ski jump. Round your answer to the nearest tenth, and then return to floating decimal mode. COS x = 453/500

cos-1 (453/50 25.04169519 DEG F0123456789 DEG

#### % 453 W 500 E < %

cos-1 (453/50 25.0 FIX DEG

cos-1 (453/50 25.04169519 DEG

Use this formula to find the length of the ramp. Round your answer to the nearest whole number, and then return to floating decimal mode. D = 1.5/SIN 12

1.5/sin (12) 7.214601517 DEG F0123456789 DEG

#### 185W> 12 E < %

1.5/sin (12) 7. FIX DEG

1.5/sin (12) 7.214601517 DEG

#### Inverse Sine

Use this formula to find the angle of the conveyor belt. Round your answer to the nearest tenth, and then return to floating decimal mode. SIN x = 13/20

sin-1 (13/20) 40.54160187 DEG

#### % 13 W 20 E < %

F0123456789 DEG

sin-1 (13/20) 40.5 FIX DEG sin-1 (13/20) 40.54160187 DEG

% " " <7% 30 E < % ! <7% 30 E <

#### P' Rx ----

P' Rx(7,30) 6.062177826 DEG

#### P' R y ---DEG

P' Ry(7,30) 3.5 DEG

The rectangular ordered pair is 6.062177826,3.5.

#### Hyperbolics

1. % Y accesses the hyperbolic (sinh, cosh, tanh) function of the next trig key that you press.

The example on the transparency master assumes all default settings. Hyperbolic calculations are not affected by the angle mode settingwhether or not the calculator is in RAD (radian), GRD (gradient), or DEG (degree) modes.

#### Sine, Cosine, Tangent

Find the hyperbolic sine (sinh), cosine (cosh), and tangent (tanh) of 5.

sinh(5) 74.20321058 DEG cosh(5) 74.20994852 DEG tanh(5) 0.999909204 DEG

% >5 E< % ?5 E< % @5 E<

#### Quick Reference to Keys

!" #$ TUVW 76 D E a F g 8 M G =

#### Function

Moves the cursor left and right so you can scroll the entry line. Press % ! or % " to scroll to the beginning or end of the entry line. Moves the cursor up and down so you can see previous entries. Press % # or % $ to scroll to the beginning or end of the history. Adds, subtracts, multiplies, and divides. Enters the digits 0 through 9. Opens a parenthetical expression. Closes a parenthetical expression. Calculates the reciprocal. Squares the value. Enters the value of pi rounded to 10 digits (3.141592654). Enters a decimal point. Indicates the value is negative. Raises a value to a specified power. Displays the following menu that lets you specify the unit of an angle. r g DMS Specifies degrees. Specifies radians. Specifies gradients. Specifies degrees (), minutes (), and seconds (). It also lets you convert an angle from decimal degrees to DMS notation.

#### % %] %b %_ % [,] %c

Turns on the 2nd indicator and accesses the function shown above the next key that you press. Calculates the common antilogarithm (10 raised to the power of the value). Calculates the square root. Changes a real number to percent. Results display according to the Decimal Notation mode setting. Enters a comma. Calculates the specified root (x) of the value.

Quick Reference to Keys ( C o n t i n u e d )

#### N %O %i %{ ? %[ v J

Lets you enter mixed numbers and fractions. Converts a simple fraction to a mixed number or a mixed number to a simple fraction. Recalls the most recently calculated result, displaying it as Ans. Clears characters and error messages on the entry line. Once the display is clear, it moves the cursor to the last entry in history. Clears all memory variables. Calculates the cosine. Calculates the inverse cosine. Lets you enter the statistical data points (x for 1-VAR stats; x and y for 2-VAR stats). Deletes the character at the cursor. If you hold J down, it deletes all characters to the right. Then each time you press J, it deletes 1 character to the left of the cursor. Displays the following menu that lets you change the Angle mode to degrees (), radians (r), or gradients (g), and then back to degrees without affecting the value in the display. DEG RAD GRD Sets degree mode. Sets radian mode. Sets gradient mode.

When you turn on the TI30X S, it is always in the DEG mode. %^ %C < %w Calculates the natural antilogarithm (e raised to the power of the value). Lets you enter and calculate the exponent. Completes the operation or executes the command. Displays the following menu that lets you clear data values and exit STAT mode. EXIT ST: Y N Press < when Y (yes) is underlined to clear data values and exit STAT mode. Press < when N (no) is underlined to return to the previous screen without exiting STAT mode.

Converts a fraction to its decimal equivalent or converts a decimal to its fractional equivalent, if possible. Displays the following menu that lets you set the number of decimal places. F0123456789 F 0-9 Sets floating decimal (standard) notation. Sets number of decimal places.

#### %Y %f %l B A z

Accesses the hyperbolic (sinh, cosh, tanh) function of the next trig key that you press. Lets you insert a character at the cursor. Turns on the constant mode and lets you define a constant. Calculates the natural logarithm (base e, where e = 2.718281828459). Calculates the common logarithm (base 10). Displays the following menu of variables. A B C D E Lets you view the stored value before pasting it to the display. Turns off the calculator and clears the display. Turns on the calculator. Displays the following menu of functions. nPr nCr ! RAND RANDI Calculates the number of possible permutations. Calculates the number of possible combinations. Calculates the factorial. Generates a random 10-digit real number between 0 and 1. Generates a random integer between 2 numbers that you specify. Separate the 2 numbers with a comma.

#### %' & H

Recalls the stored values to the display.

Displays the RESET menu. RESET: N Y Press < when N (no) is underlined to return to the previous screen without resetting the calculator. Press < when Y (yes) is underlined to reset the calculator. The message MEM CLEARED is displayed. Also, press & and - simultaneously to reset the calculator immediately. No menu or message is displayed.

A function does not have the correct number of arguments. You attempted to divide by 0. In statistics, n = 1.

#### DOMAIN

You specified an argument to a function outside the valid range. For example: For x : x = 0 or y < 0 and x is not an odd integer. For y x: y and x = 0; y < 0 and x is not an integer. For x: x < 0. For LOG or LN: x 0. For TAN: x = 90, M90, 270, M270, 450, etc. For SIN -1 or COS -1: |x | > 1. For nCr or nPr: n or r are not integers 0. For x !: x is not an integer between 0 and 69.

EQUATION LENGTH ERROR FRQ DOMAIN OVERFLOW STAT

An entry exceeds the digit limits (88 for entry line and 47 for statistics or constant entry lines); for example, combining an entry with a constant that exceeds the limit. FRQ value (in 1-variable statistics) < 0 or >99, or not an integer. |q| 110, where q is an angle in a trig, hyperbolic, or R4Pr function. You pressed u with no defined data points. You pressed v, u, or % w when not in STAT mode. Statistical analyses do not have at least 2 data points (n > 1).

#### SYNTAX

The command contains a syntax errorentering more than 23 pending operations, 8 pending values, or having misplaced functions, arguments, parentheses, or commas.

Support and Service Information

#### Product Support

Customers in the U.S., Canada, Puerto Rico, and the Virgin Islands

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Customers outside the U.S., Canada, Puerto Rico, and the Virgin Islands

Contact TI by e-mail or visit the TI calculator home page on the World Wide Web. e-mail: ti-cares@ti.com internet: www.ti.com/calc

#### Product Service

Customers in the U.S. and Canada Only

Always contact Texas Instruments Customer Support before returning a product for service.

Customers outside the U.S. and Canada

Refer to the leaflet enclosed with this product or contact your local Texas Instruments retailer/distributor.

Other TI Products and Services

Visit the TI calculator home page on the World Wide Web. www.ti.com/calc

#### Warranty Information

One-Year Limited Warranty for Electronic Product

This Texas Instruments (TI) electronic product warranty extends only to the original purchaser and user of the product. Warranty Duration. This TI electronic product is warranted to the original purchaser for a period of one (1) year from the original purchase date. This TI electronic product is warranted against defective materials and construction. THIS WARRANTY IS VOID IF THE PRODUCT HAS BEEN DAMAGED BY ACCIDENT OR

UNREASONABLE USE, NEGLECT, IMPROPER SERVICE, OR OTHER CAUSES NOT ARISING OUT OF DEFECTS IN MATERIALS OR CONSTRUCTION.

Warranty Disclaimers. ANY IMPLIED WARRANTIES ARISING OUT OF THIS SALE, INCLUDING BUT NOT

LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE ABOVE ONE-YEAR PERIOD. TEXAS INSTRUMENTS SHALL NOT BE LIABLE FOR LOSS OF USE OF THE PRODUCT OR OTHER INCIDENTAL OR CONSEQUENTIAL COSTS, EXPENSES, OR DAMAGES INCURRED BY THE CONSUMER OR ANY OTHER USER.

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3. Press 4 to select 4 decimal places.

#### 4. Press <.

4.39865 4.3987

#### Player

C. Ripken Puckett Molitor Greenwell Tartabull Palmeiro Franco Joyner Boggs Baines Sax Williams Sheridan Barfield Mattingly Hall

#### (Continued)

Number of Hits

#### 109 87

Number of Times at Bat

#### 367 280

Batting Average

0.332 0.328 0.327 0.311 0.331 0.328 0.317 0.311 0.322 0.314 0.291 0.270 0.238 0.225 0.297 0.311

#### Problems

Name ___________________________ Date ___________________________

1. Round the following numbers to 3 decimal places. a. 2.35647 b. 15.3633 c. 0.02698 _________________ _________________ _________________

2. Using the TI-30X S, round the following numbers to 4 decimal places. a. 4.39865 b. 72.965912 c. 0.29516 d. 0.00395 _________________ _________________ _________________ _________________

#### Problem

You are going to play Virtual Baseball. You need to select 9 players from the list to be on your team. Choose the players with the best batting averages.

#### Procedure

1. Find the batting averages (number of hits number of times at bat) rounded to 3 decimal places for each player. Player

(rounded to 3 decimal places)

2. Make a list of your players in order, from highest to lowest.

Player 1 Player 2 Player 3 Player 4 Player 5 ____________________ ____________________ ____________________ ____________________ ____________________

Player 6 Player 7 Player 8 Player 9

____________________ ____________________ ____________________ ____________________

Star Voyage Scientific Notation

Students investigate scientific notation by changing numbers into scientific notation, and then using them in calculations.

Math Concepts scientific notation addition division Materials TI-30X S pencil student activity

Set up the activity by telling your students: The standard form for scientific notation is a Q 10 n, where a is greater than or equal to 1 and less than 10, and n is an integer. 1. Have students practice writing the following numbers in scientific notation using pencil and paper. a. 000 b. c. 0.00000000000234 d. 0.0000000157 9.3 Q 3.84 Q 1.57 Q 10 -8

#### 2.34 Q 10 -12

12000000

2. Have students change the following numbers into scientific notation using the TI-30X S. a. 000 b. 000 c. 0.0000034 d. 0.000000004

#### 1.2 Q 10 7

2. Press % d.

#### FLO SCI ENG

9.74 Q 3.4 Q 10 -Q 10 -9

3. Press " < <.

#### 12000000 1.2x1007

Answers assume the default floating decimal setting. 1. Enter 5.8; press % C.

3. Have students change the following numbers into floating decimal (standard notation). b. 7.32 Q 105 c. 6.2 Q 10-6 d. 3 Q 10-8

#### a. 5.8 Q 10 7

000 0.0000062 0.00000003

#### 2. Enter 7; press % d.

3. Press !.

4. Press < <. To enter a negative number, press M and then enter the number.

#### 5.87 58000000.

Present the following problem to students: You are a captain of a starship. You have been assigned to go to Alpha Centauri and you have 5 years to get there. The distance from the sun to Alpha Centauri is 2.5 x miles. The distance from the earth to the sun is approximately 9.3 x miles. Your ship can travel at the speed of light. You know that light can travel a distance of 6 x miles in 1 light year. Will you be able to get to Alpha Centauri on time?

1. Using the TI-30X S, find the total distance you need to travel. 2.5 Q + 9.3 Q = 2.5000093 Q miles 2. Next, find out how long it will take you to travel the distance. (distance traveled P 1 light year) 2.5000093 Q P 6 Q = 4.166682167 years 3. Can you make the trip in the given time? Yes

Hint: Make sure your calculator is in scientific notation mode before beginning addition.

#### Extension

Now that you have been successful, you have been asked to make another trip. The distance from the Sun to Delta Centauri is 9 x miles. How long will it take you to get there from Earth?

Hint: The Earth is approximately 9.3 x 107 miles from the Sun.

#### 15 years

1. Write the following numbers in scientific notation.

Standard Notation Scientific Notation

a. 000 b. c. 0.00000000000234 d. 0.0000000157

_________________________ _________________________ _________________________ _________________________

2. Using the TI-30X S, change the following numbers into scientific notation.

a. 000 b. 000 c. 0.0000034 d. 0.000000004

3. Using the TI-30X S, change the following numbers into floating decimal notation (standard).

Scientific Notation Standard Notation

a. 5.8 Q b. 7.32 Q 105 c. 6.2 Q 10-6 d. 3 Q 10-8

You are a captain of a starship. You have been assigned to go to Alpha Centauri, and you have 5 years to get there. The distance from the Sun to Alpha Centauri is 2.5 x miles. The distance from the Earth to the Sun is approximately 9.3 x miles. Your ship can travel at the speed of light. You know that light can travel a distance of 6 x miles in 1 light year. Will you be able to get to Alpha Centauri on time?

1. Using the TI-30X S, find the total distance that you need to travel. _________________________________________________________________

Hint: Make sure your calculator is in scientific notation mode before you begin addition.

2. Next, find out how long it will take you to travel the distance. (distance traveled P 1 light year) ________________________________________________________ _______________________________________________________________________________ 3. Can you make the trip in the given time? _____________________________

#### tan-1(1.5/20) 4.3

Present the following problem to students: You want to start the ramp 15 feet away from the door. Can you do that and still have the angle of incline be less than 6 degrees? Yes, angle A is 5.7.

2. Enter 1.and press <.

#### tan-1(1.5/15 5.7

1. Find the trigonometric ratios for the triangle. Round to the nearest hundredth. (Use % for rounding.) a. sin C b. cos C c. tan C d. sin A e. cos A f. tan A _______________________ _______________________ _______________________ _______________________ _______________________ _______________________

2. Using the TI-30X S, find the value of each ratio. Round to the nearest ten thousandth. a. sin 71 b. tan 31 c. cos 25 _______________________ _______________________ _______________________

3. Using the TI-30X S, find the measure of each angle. Round to the nearest degree. a. sin B = 0.4567 b. cos A =0.6758 c. tan C = 5.83 _______________________ _______________________ _______________________

You need to build a ramp to your front door. The distance from the ground to the bottom of the door is 1.5 feet. You dont want the angle of incline to be more than 6 degrees. The distance from the street to the door is 20 feet. Is there enough room to build the ramp?

2. Use the trigonometric ratio tan = opposite leg adjacent leg to find angle A. (Round your answer to the nearest tenth.) _________________________ _________________________________________________________________ 3. Is there room to build the ramp? ____________________________________

You want to start the ramp 15 feet away from the door. Can you do that and still have the angle of incline be less than 6 degrees?

Whats My Score? 1-Variable Statistics

Students use the given test scores to find averages.

Math Concepts averages Materials TI-30X S pencil student activity

Discuss finding averages with your students.

Present the following problem to students: You and your friend are having a contest. The one who gets the highest average on their math tests for one quarter wins. Your scores are 98, 89, 78, 98, and 100. Your friends scores are 89, 89, 97, 90, and 100. Who is the winner?

1. Have students find the average of their scores using the TI-30X S. Remember to enter 2 as the frequency for 98 and 1 for all others.

1. Press % t < to select 1-VAR mode. 2. Press v and enter your first score.

#### X1 = 98

3. Press $ and enter 2 as the frequency for 98.

#### FRQ = 2

4. Press $. Continue entering your scores and frequencies, pressing $ after each score and frequency. 5. When finished, press u " to select v, the average. Write it down.

#### n v Sx sx 92.6

Whats My Score? 1-Variable Statistics (Continued)

2. Now find the average of your friends scores. Remember to put 2 as the frequency for 89 and 1 for all others. 3. Who won? Your friend: 93 (You had 92.6.)

1. Press % t " " < to select CLRDATA. 2. Press v and enter the friends first score.

#### X1 = 89

3. Continue entering the friends scores and frequencies, following steps 3 and 4 on the previous page. 4. When finished, press u " to select v, the average. Write it down.

#### n v Sx sx 93.0

Present the following problem to students: Your friend took a test on the day you were absent and scored 95. What score do you need to get so that you are the winner? The score you need: 98

Note: Make sure you exit the STAT mode before going on to another problem. 1. Press % t and " " to CLRDATA. Press <. 2. Recalculate your friends average, making sure to include the new score. 3. Use guess and check to figure out what score you need to get. 4. To exit STAT mode, press % w <.

1. You and your friend are having a contest. Whoever gets the highest average on their math tests for one quarter wins. Your scores are 98, 89, 78, 98, and 100. Your friends scores are 89, 89, 97, 90, and 100. Who is the winner? Your average Your friends average _______________________ _______________________

2. Your friend took a test on the day you were absent and scored 95. What score do you need to get so that you are the winner? Your friends new average _______________________ The score you need _______________________

Heart Rates 1-Variable Statistics

Students use the statistics functions of the TI-30X S calculator to investigate the effect of exercise on heart rate.

#### Math Concepts

Materials TI-30X S stopwatch or a watch with a second hand student activity

mean, minimum, maximum, and range

Students may be placed in smaller groups for this activity to minimize the amount of data to be entered. Ask students:

What do you think the average heart rate is for someone your age? What about after exercising?

Have students complete the following investigation to check their estimations. 1. Have students check their resting heart rate by timing their pulse for 1 minute. (You could have them time for 10 seconds and then multiply by 6, but this could be the quietest minute of your day!) 2. Collect data on the chart. Enter each students heart rate and a mark in the frequency column. As other students have the same heart rate, add another tally mark in the frequency column. 3. Enter the heart rate data into the TI-30X S. a. Enter the first heart rate on the chart as the first X value, and the number of tallies for that heart rate as the frequency. b. You must press $ between entries. For example, enter the first heart rate, and then press $. Enter the first frequency, and then press $. For example, assume a class of 22 students:

Use the following table of data to explore the relationships of different pairs of data. Begin by entering the points per game as the X-variable and the minutes per game as the Y-variable. Player

1. Rhonda Mapp 2. Vicky Bullet 3. Janeth Arcain 4. Cynthia Cooper 5. Elena Baranova 6. Malgozata Dydek 7. Heidi Burge 8. Keri Chaconas 9. Rebecca Lobo 10. Coquese Washington 11. Toni Foster 12. Maria Stepanova

#### Field Goal Percentage

.506.441.426.446.420.482.509.297.484.294.467.426

#### Points per Game

10.1 13.3 6.8 22.7 12.9 12.9 6.7 4.8 11.7 1.9 4.9 3.3

#### Rebounds per Game

4.3 6.5 3.6 3.7 9.3 7.6 3.3.8 6.9.9 1.9 1.9

#### Minutes per Game

21.7 31.6 21.33.16.7 13.2 29.2 8.1 13.6 6.5

Use the calculator to investigate the correlation of the other data in the table such as the relation of field goal percentage to minutes per game, or rebounds per game to minutes per game. (Remember, since you have already entered the minutes per game in Y, you only need to enter the new data in X.) 1. What is the average field goal percentage?

2. Write the equation for the line of best fit.

3. Write the correlation coefficient.

4. What is the average number of rebounds per game?

5. Write the equation for the line of best fit.

6. What is the total number of rebounds per game for all the given players?

7. Write the equation for the line of best fit.

8. Write the correlation coefficient.

9. Which 2 variables have the closest correlation? (That is, which have the correlation coefficient closest to 1 or 1?)

TI-30X S Basic Operations Clear, Insert, and Delete Basic Math Order of Operations and Parentheses Constant Decimals and Decimal Places Memory Fractions Pi Powers, Roots, and Reciprocals Probability Statistics Trigonometry Notation Logarithms and Antilogarithms Angle Settings and Conversions Polar and Rectangular Conversions Hyperbolics 98 100

TI-30X S Basic Operations

1. & turns on the calculator. 2. % turns on the 2nd indicator and accesses the function shown above the next key you press. 3. % ' turns off the calculator and clears the display. 4. < completes the operation or executes the command. 5. % i recalls the most recently calculated result and displays it as Ans. 6. ! and " move the cursor left and right to scroll the entry line. Press % ! or % " to scroll to the beginning or end of the entry line. # and $ move the cursor up and down through previous entries. % # or % $ scroll to the beginning or end of history. 7. % displays the RESET menu. RESET: N Y

Press < when N (no) is underlined to return to the previous screen without resetting the calculator. Press < when Y (yes) is underlined to reset the calculator. The message MEM CLEARED is displayed.

Note: Pressing & and simultaneously resets the calculator immediately. No menu or message is displayed.

The examples on the transparency masters assume all default settings. Resetting the calculator: Returns settings to their defaults: floating decimal (standard) notation and degree (DEG) mode. Clears memory variables, pending operations, entries in history, statistical data, constants, and Ans (Last Answer). The entry line can contain up to 88 characters. When or appear in the display, the entry line contains more characters to the left or right. When or appear, more characters are located above or below the entry line. Press & after Automatic Power Down (APD). The display, pending operations, settings, and memory are retained.

Second, Off, Arrows, Equals

Enter 46 N 23. Change 46 to 41. Change 23 to 26 and complete the operation. Enter 81 + 57 and complete the operation. Scroll to see your previous entries.

#### Press Display

% ! " #$<

46 U 23 !!!!1 ""6< 81 T 57 < % & ##$

#### 41-26 81+57 ~ 81+57

Reset the calculator.

#### RESET: RESET: N Y N Y -

% " < -

#### MEM CLEARED

Pressing & and - at the same time also resets the calculator immediately. No menu or message is displayed. Using % or & and returns all settings to their defaults and clears the memory.

Use Last Answer (Ans) to calculate (2+2)2.

#### 2+2 Ans Ans2

2T2< % F <

Clear, Insert, and Delete

1. - clears characters and error messages. Once the display is clear, it moves the cursor to the most recent entry. 2. % f lets you insert a character at the cursor. 3. J deletes the character at the cursor. Hold J down to delete all characters to the right. Then, each time you press J, it deletes 1 character to the left of the cursor.

The examples on the transparency masters assume all default settings. Pressing - does not affect the memory, statistical registers, angle units, or numeric notation.

#### Delete and Insert

Enter 4569 + 285, and then change it to 459 + 2865. Complete the problem.

#### 4569+285

4569 T 285 !!!!! !J """" % <

#### 459+285

459+2865

Enter 21595. Clear the 95. Clear the entry.

#### !!(Clear to right)

(Clear entry)

#### Basic Math

1. T adds. 2. U subtracts. 3. V multiplies. 4. W divides. 5. < completes the operation or executes the command. 6. M lets you enter a negative number. 7. % _ changes a real number to a percent.

Three people babysit for $3.25 each per hour. First person works 16 hours. Second person works 12 hours. Third person works 17 hours. How much did each person earn?

% V 3.25 < 16 < 12 < 17 < %

#### (Constant mode is off.)

K = *3.25 ~ 16*3. 16*3. 25 12*3. 12*3. 25 17*3. 17*3. 25 ~

Decimals and Decimal Places

1. 8 enters a decimal point. 2. % displays the following menu, which lets you set the number of decimal places. F0123456789 F 0-9 Sets floating decimal (standard) notation. Sets the number of decimal places.

The examples on the transparency masters assume all default settings. % 8 removes the setting and returns to standard notation (floating decimal). The FIX setting affects all decimal results and the mantissa of scientific and engineering notation results. The TI-30X S automatically rounds the result to the number of decimal places selected. For example, when the decimal is set to 2 places, 0.147 becomes 0.15 when you press <. The TI-30X S also rounds or pads resulting values with trailing zeros to fit the selected setting. For example, when the decimal is set to 5 places, 0.147 becomes 0.14700 when you press <. All results are displayed to the FIX setting until you clear the setting by either pressing % 8 or selecting F(floating) on the decimal notation menu. Resetting the calculator also clears the FIX setting. After pressing % , you can select the number of decimal places in 2 ways: Press ! or " to move to the number of decimal places you want, and then press <, or Press the number key that corresponds to the number of decimal places you want. FIX affects only the results, not the entry.

#### Decimal, FIX

Round 12.345 to the hundredths place, to the tenths place, and then cancel the FIX setting.

#### 12.345

% """ < <

#### F0123456789 _

F01_3456789 2

#### FIX DEG

% 1 % 8

#### Memory

1. L displays the following menu of variables. A B C D E Lets you select a variable in which to store the displayed value. The new variable replaces any previously stored value. rand Lets you set a seed value for random integers. 3. % { clears all variables.

3. % j converts a fraction to its decimal equivalent or changes a decimal to its fractional equivalent, if possible.

Calculations involving a fraction and a decimal will always display results as decimals. For a mixed number, the whole number can be up to 3 digits, the numerator can be up to 3 digits, and the denominator can be any number through 1000. For a simple fraction, the numerator can be up to 6 digits and the denominator can be any number through 1000.

At the party, you ate 5/6 of the pepperoni pizza and 1/10 of the sausage pizza. How much pizza did you eat?

#### 56+6+110

5N6T1 N 10 <

#### 14 / 15

Mixed Numbers

A baby weighed 4 3/8 pounds at birth. In the next 6 months, she gained 2 3/4 pounds. How much does she weigh?

#### 438+3 8+23 4

4N3N 8T2N3 N4<

Mixed Number to Fraction, Fraction to Mixed Number

Sam is making his birthday cake. The recipe calls for 3 1/2 cups of flour. He has only a 1/2-cup measuring cup. To find out how many times Sam must use his measuring cup, change the mixed number to a fraction. 3 1/ 2 1/ 2 = 7

A b/c d/e 312 A b/c d/e 1 2

#### DEG DEG

3N1N2 % <

Show the mixed number again.

#### % <

Ans A b/c d/e

#### Fraction to Decimal

Juan swims 20 laps in 5.72 minutes. Mary swims 20 laps in 5 3/4 minutes. Change Marys time to a decimal to determine who swims faster.

#### 534 F D 3 4

5N3N 4 % <

#### Decimal to Fraction

Change 2.25 to its fractional equivalent.

#### 2.25 F D

25 % <

#### 21/4 1/4

1. g displays the value of pi rounded to 10 digits (3.141592654).

The examples on the transparency masters assume all default settings. Internally, pi is stored to 13 digits (3. 141592653590). After pressing % , you can select the number of decimal places in 2 ways: Press ! or " to move to the number of decimal places you want, and then press <, or Press the number key that corresponds to the number of decimal places you want. The transparency masters show both ways.

#### Circumference

Use this formula to find the amount of border you need if you want to put a circular border all the way around the tree. C = 2pr = 2 x p x 1.5m

#### 2 V g V 1.5 <

* 2*p*1.5

#### 9.424777961

Use this formula to find how much of a lawn would be covered by the sprinkler. Round your answer to the nearest whole number, and then return to floating decimal mode. A = pr2 = p x 42

#### p*42 *

gV4F < %

#### 50.26548246

F0123456789 DEG

#### p*42 * p*42

Powers, Roots, and Reciprocals

1. F squares the value. 2. % b calculates the square root. 3. % c calculates the specified root (x) of the value. 4. a calculates the reciprocal. 5. G raises a value to a specified power.

The examples on the transparency masters assume all default settings. A combination is an arrangement of objects in which the order is not important, as in a hand of cards. A permutation is an arrangement of objects in which the order is important, as in a race. A factorial is the product of all the positive integers from 1 to n, where n is a positive whole number 69. To control a sequence of random numbers, you can store (L) an integer to RAND just as you would store values to memory variables. The seed value changes randomly when a random number is generated. For RANDI, use a comma to separate the 2 numbers that you specify.

#### Combination (nCr)

You have space for 2 books on your bookshelf. You have 4 books to put on the shelf. Use this formula to find how many ways you could place the 4 books in the 2 spaces. 4 nCr 2 = x

A AB and BA count as only 1 combination.

#### C AB BA CA DA

D AC BC CB DB AD BD CD DC

#### 4H" 2<

nCr ---

#### 4 nCr 2

Permutation (nPr)

Four different people are running in a race. Use this formula to find how many different ways they can place 1st and 2nd. 4 nPr 2 = x

#### D AC BC CB DB

AB and BA count as 2 permutations.

#### AD BD CD DC

nPr ---

#### 4H 2<

4 nPr 2

#### Factorial (!)

Using the digits 1, 3, 7, and 9 only one time each, how many 4-digit numbers can you form? 4! = x

ABCD BACD CABD DABC Press ABDC BADC CADB DACB

#### ACBD BCAD CBAD DBAC

ACDB BCDA CBDA DBCA Display

#### nPr 4! nCr

ADBC BDCA CDAB DCAB ADCB BDAC CDBA DCBA

#### 4H"" <<

Random (RAND)

Generate a sequence of random numbers.

H""" << <

#### Results will vary.

RAND -___

#### 0.839588694

RAND RAND

#### 0.482688185

Set 1 as the current seed and generate a sequence of random numbers.

1L! < H""" << <

#### rand ----

1rand RAND RAND

#### 310000.

0.000018633

#### 0.745579721

Random Integer (RAND)

Generate a random integer from 2 through 10.

#### H! <2% 10 E <

RANDI ---__

#### ANDI( 2, 10)

RANDI( 2, 10)

#### Statistics

1. % t displays a menu from which you can select 1-VAR, 2-VAR or CLRDATA.

Analyzes data from 1 set of data with 1 measured variablex.

Analyzes paired data from

3. % w displays the following menu that lets you clear data values and exit STAT mode. EXIT ST: Y N Press < when Y (yes) is underlined to clear data values and exit STAT mode. Press < when N (no) is underlined to return to the previous screen without exiting STAT mode.

#### CLRDATA

2 sets of data with 2 measured variablesx, the independent variable, and y, the dependent variable. Clears data values without exiting STAT mode.

4. u displays the menu of variables with their current values.

n v or w Sx or Sy sx or sy Gx or Gy Gx2 or Gy2 Gxy

2. v lets you enter data points (x for 1-VAR stats; x and y for 2-VAR stats).

Number of x (or x,y) data points. Mean of all x or y values. Sample standard deviation of x or y. Population standard deviation of x or y. Sum of all x values or y values. Sum of all x 2 values or y 2 values. Sum of (x Q y) for all xy pairs in 2 lists. Linear regression slope. Linear regression y-intercept. Correlation coefficient.

The examples on the transparency masters assume all default settings. To save the last data point or frequency value entered, you must press < or $. You can change data points once they are entered.

#### Entering 1-VAR Stat Data

Five students took a math test. Using their scores, enter the data points85, 85, 97, 53, 77.

#### 1-VAR ----X 1= X1=85

% <v 85 $ 2 $ 97 $ $ 53 $ $ 77 <

FRQ=1 FRQ=1 FRQ=2 FRQ=2 X2=97 X3=53 X4=77

#### Viewing the Data

Find the number of data points (n), the mean (v), the sample standard deviation (sx), the population standard deviation (sx), the sum of the scores (Gx), and the sum of the squares (Gx2).

#### n v Sx sx STAT

u " " " " "

#### v Sx sx STAT

n v Sx sx

#### 16.39512123

STAT DEG

#### 14.66424222

32597.

#### Removing Data Points

Return to the first data point. Display the lowest score, drop it, and then find the new mean (v). Clear all data by exiting STAT mode.

v $$$$ $0< u" % <

#### FRQ=0 FRQ=0

EXIT ST: Y N STAT

#### v Sx sx 86. STAT DEG

Entering 2-VAR Stat Data

The table below shows the number of pairs of athletic shoes sold by a small shoe store. Enter this data as the data points.

#### Month April May

Total No.(x) 58 (x1) 47 (x2)

Brand A (y) 35 (y1) 28 (y2)

#### 2-VAR ----DEG

1-VAR X 1= X1=58

% " <v 58 $ 35 $ 47 $ 28 <

Y1 =35 X2 =47 Y2 =28 Y2 =28

If the store sells 32 pairs of shoes in June, predict the June sales of Brand A. When finished, exit STAT mode and clear all data points.

#### u! < 32 E < % <

18.45454545

#### y' (32)

Trigonometry

1. @ calculates the tangent. 2. % \ calculates the inverse tangent. 3. ? calculates the cosine. 4. % [ calculates the inverse cosine. 5. > calculates the sine. 6. % Z calculates the inverse sine.

The examples on the transparency masters assume all default settings. Before starting a trigonometric calculation, be sure to select the appropriate angle mode setting (degree, radian, or gradientSee Chapter 16, Angle Settings and Conversions). The calculator interprets values according to the current angle-unit mode setting. E ends a trig function.

#### Tangent

Use this formula to find the distance from the lighthouse to the boat. Round your answer to the nearest whole number, and then return to floating decimal mode. D = 78/TAN 27

#### 78/tan (27)

78 W @ 27 E < % " < % 8

#### 153.0836194

Inverse Tangent

Use this formula to find the angle of depression. Round your answer to the nearest tenth, and then return to floating decimal mode. TAN x = 600/2500

#### tan tan -1 (600/25

% 600 W 13.E <

#### % " " < % 8

13.49573328

#### Cosine

Use this formula to find how far the base of the ladder is from the house. Round your answer to the nearest whole number, and then return to floating decimal mode. D = 5 x COS 75

5V? 75 E < % " < % 8

#### 1.294095226

5*cos (75)

#### Inverse Cosine

Use this formula to find the angle of the ski jump. Round your answer to the nearest tenth, and then return to floating decimal mode. COS x = 453/500

#### cos-1 (453/50

% 453 W 500 E < % " " < % 8

#### 25.04169519

cos-1 (453/50 cos-1 (453/50

Use this formula to find the length of the ramp. Round your answer to the nearest whole number, and then return to floating decimal mode. D = 1.5/SIN 12

#### 185W> 12 E < %

F 0123456789 DEG

#### 7.214601517

1.5/sin (12)

#### Inverse Sine

Use this formula to find the angle of the conveyor belt. Round your answer to the nearest tenth, and then return to floating decimal mode. SIN x = 13/20

% 13 W 20 E < % " " < % 8

#### 40.54160187

sin-1 (13/20)

#### Notation

1. % d displays the following numeric notation mode menu. Restores standard mode FLO (floating decimal). Turns on scientific mode SCI and displays results as a number from 1 to 10 (1 n < 10) times 10 to an integer power. Turns on engineering mode ENG and displays results as a number from 1 to 1000 (1 n < 1000) times 10 to an integer power. The integer power is always a multiple of 3.

2. % C lets you enter and calculate the exponent.

The examples on the transparency masters assume all default settings. You can enter a value in scientific notation regardless of the numeric notation mode setting. For a negative exponent, press M before entering it. Results requiring more than 10 digits are automatically displayed in scientific notation. For the decimal notation mode, refer to % in Chapter 6, Decimals and Decimal Places. These modes (FLO, SCI, and ENG) affect only the display of results.

Engineering, Scientific, Floating Decimal

Enter 12543, which will be in floating decimal notation (default), and alternate between scientific and engineering notations.

#### FLO SCI ENG --DEG

12543 % " << % " < % " <

#### 12543 FLO

1.2543x1004 x10

#### SCI DEG

ENG --DEG

#### 12543 FLO ---

12.543x1003 x10

#### ENG DEG

EQUATION LENGTH ERROR FRQ DOMAIN OVERFLOW STAT

An entry exceeds the digit limits (88 for entry line and 47 for statistics or constant entry lines); for example, combining an entry with a constant that exceeds the limit. FRQ value (in 1-variable statistics) < 0 or >99, or not an integer. |q | 110, where q is an angle in a trig, hyperbolic, or R4Pr function. You pressed u with no defined data points. You pressed v, u, or % w when not in STAT mode. Statistical analyses do not have at least 2 data points (n > 1).

#### SYNTAX

The command contains a syntax errorentering more than 23 pending operations, 8 pending values, or having misplaced functions, arguments, parentheses, or commas.

Support and Service Information

#### Product Support

Customers in the U.S., Canada, Puerto Rico, and the Virgin Islands

For general questions, contact Texas Instruments Customer Support: phone: e-mail: 1-80-T-CARES (1-800-842-2737) ti-cares@ti.com

For technical questions, call the Programming Assistance Group of Customer Support: phone: 1-972-917-8324

Customers outside the U.S., Canada, Puerto Rico, and the Virgin Islands

Contact TI by e-mail or visit the TI calculator home page on the World Wide Web. e-mail: ti-cares@ti.com internet: www.ti.com/calc

#### Product Service

Customers in the U.S. and Canada Only

Always contact Texas Instruments Customer Support before returning a product for service.

Customers outside the U.S. and Canada

Refer to the leaflet enclosed with this product or contact your local Texas Instruments retailer/distributor.

Other TI Products and Services

Visit the TI calculator home page on the World Wide Web. www.ti.com/calc

TI-30X IIS: A Guide For Teachers

#### Warranty Information

One-Year Limited Warranty for Electronic Product

This Texas Instruments (TI) electronic product warranty extends only to the original purchaser and user of the product. Warranty Duration. This TI electronic product is warranted to the original purchaser for a period of one (1) year from the original purchase date. This TI electronic product is warranted against defective materials and construction. THIS WARRANTY IS VOID IF THE PRODUCT HAS BEEN DAMAGED BY ACCIDENT OR

UNREASONABLE USE, NEGLECT, IMPROPER SERVICE, OR OTHER CAUSES NOT ARISING OUT OF DEFECTS IN MATERIALS OR CONSTRUCTION.

Warranty Disclaimers. ANY IMPLIED WARRANTIES ARISING OUT OF THIS SALE, INCLUDING BUT NOT

LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE ABOVE ONE-YEAR PERIOD. TEXAS INSTRUMENTS SHALL NOT BE LIABLE FOR LOSS OF USE OF THE PRODUCT OR OTHER INCIDENTAL OR CONSEQUENTIAL COSTS, EXPENSES, OR DAMAGES INCURRED BY THE CONSUMER OR ANY OTHER USER.

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