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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
q
step
at a time. When
you begin a trace, the trace cursor is on the first selected function at
q
min
. 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
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