Chapter 6: Sequence Graphing
108
displayed. In
PolarGC
format, X, Y, R, and
q
are updated; if
CoordOn
format is selected, R and
q
are displayed.
TRACE
The axes format setting affects TRACE.
When
Time
,
uv
,
vw
, or
uw
axes format is selected, TRACE moves the cursor along the sequence
one
PlotStep
increment at a time. To move five plotted points at once, press
y
~
or
y
|
.
•
When you begin a trace, the trace cursor is on the first selected sequence at the term number
specified by
PlotStart
, even if it is outside the viewing window.
•
Quick Zoom applies to all directions. To center the viewing window on the current cursor
location after you have moved the trace cursor, press
Í
Í
. The trace cursor returns to
n
Min
.
In Web format, the trail of the cursor helps identify points with attracting and repelling behavior in
the sequence. When you begin a trace, the cursor is on the x-axis at the initial value of the first
selected function.
Note:
To move the cursor to a specified
n
during a trace, enter a value for
n
, and press
Í
. For
example, to quickly return the cursor to the beginning of the sequence, paste
n
Min
to the
n
=
prompt
and press
Í
.
Moving the Trace Cursor to Any Valid
n
Value
To move the trace cursor to any valid
n
value on the current function, enter the number. When you
enter the first digit, an
n
=
prompt and the number you entered are displayed in the bottom-left
corner of the screen. You can enter an expression at the
n
=
prompt. The value must be valid for
the current viewing window. When you have completed the entry, press
Í
to move the cursor.
ZOOM
ZOOM
operations in Seq graphing work the same as in Func graphing. Only the
X
(
Xmin
,
Xmax
,
and
Xscl
) and
Y
(
Ymin
,
Ymax
, and
Yscl
) window variables are affected.
PlotStart
,
PlotStep
,
n
Min
, and
n
Max
are only affected when you select
ZStandard
. The
VARS Zoom
secondary menu ZU items 1 through 7 are the
ZOOM MEMORY
variables for Seq graphing.
CALC
The only
CALC
operation available in Seq graphing is
value
.
