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Chapter 4: Parametric Graphing 142
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.
Moving the Trace Cursor to Any Valid T Value
Moving the Trace Cursor to Any Valid T ValueMoving the Trace Cursor to Any Valid T Value
Moving the Trace Cursor to Any Valid T Value
To move the trace cursor to any valid
T value on the current function, enter the number.
When you enter the first digit, a
T= prompt and the number you entered are displayed in
the bottom-left corner of the screen. You can enter an expression at the
T= prompt. The
value must be valid for the current viewing window. When you have completed the entry,
press Í to move the cursor.