TI-83 Plus Polar Graphing 173
Exploring Polar Graphs
Free-Moving Cursor
The free-moving cursor in Pol graphing works the same as in Func
graphing. In RectGC format, moving the cursor updates the values of X
and Y; if CoordOn format is selected, X and Y are displayed. In PolarGC
format, X, Y, R, and q are updated; if CoordOn format is selected, R and q
are displayed.
TRACE
To activate TRACE, press r. When TRACE is active, you can move the
trace cursor along the graph of the equation one qstep at a time. When
you begin a trace, the trace cursor is on the first selected function at
qmin. If ExprOn format is selected, then the equation is displayed.
In RectGC format, TRACE updates the values of X, Y, and q; if CoordOn
format is selected, X, Y, and q are displayed. In PolarGC format, TRACE
updates X, Y, R, and q; if CoordOn format is selected, R and q are
displayed.
To move five plotted points at a time on a function, press y | or
y ~. If you move the trace cursor beyond the top or bottom of the