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TI-83 Plus Parametric Graphing 163
Exploring Parametric Graphs
Free-Moving Cursor
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.
TRACE
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
.
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