
Dening the expressions
There are 10 elds for dening functions. These are labeled F1(X) through F9(X) and F0(X).
1. Highlight the eld you want to use, either by tapping on it or scrolling to it. If you are entering a new
expression, just start typing. If you are editing an existing expression, tap and make your
changes. When you have
nished dening or changing the expression, press .
2. Enter the linear function in F1(X).
1
3. Enter the quadratic function in F2(X).
1 3
NOTE: You can tap the button to assist in the entry of equations. In the Function app, it has
the same eect as pressing . (In other apps, enters a dierent character.)
4. Do one of the following:
●
Give one or more functions a custom color when it is plotted.
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Evaluate a dependent function.
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Deselect a denition you do not want to explore.
●
Incorporate variables, math commands, and CAS commands in a denition.
For the sake of simplicity we can ignore these operations in this example. However, they can be useful
and are common Symbolic view operations.
110 Chapter 7 Function app
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