Exploring Parametric Graphs - Texas Instruments TI-84 PLUS - Graphing Calculator Manual Book

Displaying a Graph
When you press s, the TI-84 Plus plots the selected parametric equations. It evaluates the X
and Y components for each value of
each point defined by X and Y. The window variables define the viewing window.
As the graph is plotted, X, Y, and T are updated.
Smart Graph applies to parametric graphs.
Window Variables and Y.VARS Menus
You can perform these actions from the home screen or a program.
• Access functions by using the name of the X or Y component of the equation as a variable.
• Store parametric equations.
• Select or deselect parametric equations.
• Store values directly to window variables.

Exploring Parametric Graphs

Free-Moving Cursor
The free-moving cursor in parametric graphing works the same as in Func graphing.
In format, moving the cursor updates the values of X and Y; if
RectGC
X and Y are displayed.
In format, X, Y, R, and q are updated; if
PolarGC
displayed.
(from to in intervals of
T Tmin Tmax
format is selected, R and q are
CoordOn
Chapter 4: Parametric Graphing
), and then plots
Tstep
format is selected,
CoordOn
95