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, pressÍÍ. The trace cursor returns to
nMin.
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
nMin 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, nMin, and nMax 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.
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