HP 39gs Graphing Aplets and their views, Aplet views, About the Symbolic view, Defining an expression (Symbolic view)

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Aplets and their views

Aplet views

This section examines the options and functionality of the three main views for the Function, Polar, Parametric, and Sequence aplets: Symbolic, Plot, and Numeric views.

About the Symbolic view

The Symbolic view is the defining view for the Function, Parametric, Polar, and Sequence aplets. The other views are derived from the symbolic expression.

You can create up to 10 different definitions for each Function, Parametric, Polar, and Sequence aplet. You can graph any of the relations (in the same aplet) simultaneously by selecting them.

Defining an expression (Symbolic view)

Choose the aplet from the Aplet Library.

Press or to select an aplet.

The Function,

Parametric, Polar, and Sequence aplets start in the

Symbolic view.

If the highlight is on an existing expression, scroll to an empty line—unless you don’t mind writing over the

expression—or, clear one line () or all lines

( CLEAR).

Expressions are selected (check marked) on entry. To

deselect an expression, press . All selected expressions are plotted.

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