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The Function aplet is probably the one that you will use

most of all. It allows you to:

! graph equations

! find intercepts

! find turning points (maxima/minima)

! find areas under curves

! find areas between curves

! find gradients

! find derivatives algebraically

! find simple integrals algebraically

! evaluate functions at particular values

! graph and evaluate algebraically expressions such as f(g(x)) or f(x+2)

Choose the aplet

The first step for any aplet is to choose it in the

APLET LIBRARY. Press the APLET key and

you will see something similar to the screen on

the right. Use the arrow keys to move the

highlight up or down until the Function aplet is

selected. Now, looking at the list of programmable functions at the bottom of

the screen, you should see labels of

and .

Press the key under

first. You’ll see the

message shown right - press the

key.

The reason for doing this is to clear out any

functions that you may have put in there while

playing around, and so to make sure that what

you see will be the same as the screen snapshots.

HP 39G Master Guide

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