Quick Start Guide

Quick Start Guide 27
Polar app
The Polar app enables you to define polar equations and explore their graphs and
tables of values. It is similar in structure and functionality to the Function app. To open
the Polar app, press ! and select Polar. The app opens in Symbolic view. The
information below describes the major differences between the Polar app and the
Function app (see “Function, Advanced Graphing, Parametric, Polar, and Sequence
apps” on page 22).
Symbolic view The Symbolic view of the Polar app enables you to specify up to ten
polar equations, each one defining r—the signed distance a point is from the origin:
(0,0)—in terms of θ, the anti-clockwise angle a segment from the point to the origin
makes with the polar axis. An example is r = (3θ)/π.
The menu items are the same as in the Function Symbolic view, except that here replaces (and enters θ
when tapped).
Plot view Press P to display the Plot view and see the graphs of the equations
selected in the Symbolic view. The functionality here is the same as in the Function Plot
view, except that there are no Fcn functions.
Plot Setup view Press SP to display the Plot Setup view. This view enables you
to configure the appearance of the polar graphs. This view is similar to the Plot Setup
view of the Function app (see “Function, Advanced Graphing, Parametric, Polar, and
Sequence apps” on page 22), except that it also contains θ Rng and θ Step fields. These
fields enable you to specify the range and fineness of the θ-values used to generate the
points for graphing.
Numeric view Press N to display Numeric view. This view is the same as you
see
in the Function app.
Sequence app
The Sequence app enables you to define sequences. You can then view a stairstep or cobweb plot of a sequence, and explore
a table of sequence values. To open the Sequence app, press ! and select Sequence. The app opens in Symbolic view.
The information below describes the major differences between the Sequence app and the Function app (see “Function,
Advanced Graphing, Parametric, Polar, and Sequence apps” on page 22).
Symbolic view The Symbolic view enables you to specify up to ten sequence
definitions in N. Each sequence is defined either explicitly in terms of N or recursively.
You must set a non-negative integer starting value of N for each sequence. This value
is entered to the right of the first sequence value. Note that N must be entered as an
uppercase character (N) in this app.
The menu items available depend on the equation you are specifying at the time:
• —Makes the selected definition editable
• —Clears or selects a sequence for graphing and table-building