Polar Graphing 346
During a trace, you can also evaluate r(q) by typing the q value and pressing ¸.
Note: You can use QuickCenter at any time during a trace, even if the cursor is still on
the screen.
…
Trace Lets you move the cursor along a graph one qstep at a
time.
• When you begin a trace, the cursor is on the first selected
equation at
qmin.
• QuickCenter applies to all directions. If you move the
cursor off the screen (top or bottom, left or right), press
¸ to center the viewing window on the cursor
location.
• Automatic panning is not available. If you move the cursor
off the left or right side of the screen, the TI-89 Titanium /
Voyage™ 200 Graphing Calculator will not automatically
pan the viewing window. However, you can use
QuickCenter.
‡ Math
Only 1:Value, 6:Derivatives, 9:Distance, A:Tangent, and
B:Arc are available for polar graphs. These tools are
based on
q values. For example:
• 1:Value displays an r value (or x and y, depending on the
graph format) for a specified
q value.
•
6:Derivatives finds dy/dx or dr/dq at a point defined for
a specified
q value.
Tool For Polar Graphs:
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