Hp Prime Graphing Wireless Calculator Manual do Utilizador descarregar pdf (Página 13)

Geometry 9

16. Ta p a n d cho o s e Point > point

You now need to specify the x and y coordinates of the

new point. The former is defined as the abscissa of point

B (referred to as GB in Symbolic view) and the latter is

defined as the slope of tangent line C (referred to as GC

in Symbolic view).

17. Yo u s h o u l d h a ve point() on the entry line. Between

the parentheses, add:

abscissa(GB),slope(GC)

For the abscissa command, tap , select Cartesian,

and then select abscissa. For the slope command, tap

, select Measure, and then select slope.

18. Ta p .

The definition of your

new point is added to

Symbolic view. When

you return to Plot view,

you will see a point

named D and it will

have the same x-

coordinate as point B.

19. Press

If you can’t see point D,

pan until it comes into

view. The y coordinate

of D will be the

derivative of the curve at

point B.

Since it is difficult to

read coordinates off the screen, we’ll add a calculation

that will give the exact derivative (to three decimal

places) and which we can display in Plot view.

Add some

calculations

20.Press M.

Numeric view is where you enter calculations.

21. Ta p .

22. Tap and choose Measure > slope

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Hp Prime Graphing Wireless Calculator Manual do Utilizador Página 13