HP Prime Graphing Wireless Calculator Manuale Utente Scaricare il pdf (Pagina 201)

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101

Highlight the blank denition following GC and tap .

When creating objects that are dependent on other objects, the order in which they appear in Symbolic

view is important. Objects are drawn in Plot view in the order in which they appear in Symbolic view.

Since we are about to create a new point that is dependent on the attributes of GB and GC, it is important

that we place its denition after that of both GB and GC. That is why we made sure we were at the

bottom the list of denitions before tapping . If the new denition appeared higher up in

Symbolic view, the point created in the following step would not be active in Plot view.

Tap and choose Point > point.

You now need to specify the x and y coordinates of the new point. The former is dened as the abscissa

of point B (referred to as GB in Symbolic view) and the latter is dened as the slope of tangent line C

(referred to as GC in Symbolic view).

4. You should have point() on the entry line. Between the parentheses, add:

abscissa(GB),slope(GC)

For the abscissa command, press and tap . Press to jump to commands that

start with the letter A and then scroll to abscissa and tap . For the slope command, press

and tap . Press to jump to commands that start with the letter S and then

scroll to

slope and tap . Of course, you can type the commands in letter by letter as well. Press

for the lower-case alpha lock. Press again to unlock.

Getting started with the Geometry app 153

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HP Prime Graphing Wireless Calculator Manuale Utente Pagina 201

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