HP 40GS ...
HP40gs  Statistics  Mean. See www.mathheals.com for more videos.
A short history of the HP graphing calculators.... this video is a precursor to the "indepth" tutorials that I am hoping to do for my ...
Answer sheet Lesson 1 Question 1: 2
Question 2: 2  2
(1,0) (3,0) (1, 4) (0, 3)
= 4  4 = 4  12 = 4 = 2  3
Question 3 = 1
Question 4
Tangent at (1,0): = 2 + 4 Normal at (1,0): = /2  1/2 Tangent at (3,0): = 2  6 Normal at (3,0): = /2 + 3/2
Lesson .
= 9/4
2.
(0,4): = 8 + 4 (2,4): = 8  12 (1,0): = 0
3. a)x=4 b)x=1,1 c)x=2, . Answers for a correct mark must include When the derivative equals zero there is a horizontal line on either side of the line the derivative approaches zero.
Lesson 3
1.
2 2
= 2
2.
2 2
=2
3.
2 2
= 2
4.
2 2
=2
5.
= 2  2 , = 2, 2
2 = 4, 4 2

+
6.
=  + 2 , = 1, 1
2 = 4, 4 2
+

7. Anything about the sign of the second derivative indicates if the curve is concave up or concave down.
!
FRIES WITH THAT?
On a recent trip to Luna Park Sydney data was collected and recorded about how much people spent on food and drinks in the park. Robert Ridge the food and beverage manager needs your help interpreting the data so that they can boost their sales!
$15 $25 $13 $12 $22 $17 $16 $16 $14 $20 $17 $9 $19 $23 $27 $5 $4 $16 $6 $16 $12 $12 $18 $10 $11 $30 $15 $8 $16 $10
A sample of 30 people were asked how much they had spent on any food and drinks for themselves in the park rounded to the nearest whole dollar. The results are in the table above. Using your HP 40gs Graphing Calculator, press the button and then select the Statistics option. Remember to reset the applet to clear any old data in it. Then enter in the dataset above in column C1. You should have a!total of 30 numbers. Press the Stats button (soft key) and write down following results rounded to two decimal places when necessary. Mean: __________ Median: __________
Sample Standard Deviation: __________ Lowest Score: __________ Highest ...