Parametric Graphing 4-7
82EB1A~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 1:20 PM Printed: 10/27/05 1:58
PM Page 7 of 8
The free-moving cursor in Par 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.
To activate
TRACE, press r. When TRACE is active, you
can move the trace cursor along the graph of the equation one
Tstep at a time. When you begin a trace, the trace cursor is on
the first selected function at
Tmin. If ExprOn is selected, then
the function is displayed.
In
RectGC format, TRACE updates and displays the values of X,
Y, and T if CoordOn format is on.
In PolarGC format, X, Y, R, q and T are updated; if CoordOn
format is selected, R, q, and T are displayed. The X and Y (or R
and q) values are calculated from T.
To move five plotted points at a time on a function, press y
| or y ~. If you move the cursor beyond the top or bottom
of the screen, the coordinate values at the bottom of the screen
continue to change appropriately.
Quick Zoom is available in
Par graphing; panning is not
(Chapter 3).
Exploring Parametric Graphs
Free-Moving
Cursor
TRACE