Texas Instruments TI-Nspire CX II Series Handhelds Manualbook page 30

2. (Optional) To change the trace step increment for tracing, press
After you type a different step increment, the Graph Trace tool moves across the
graph in steps of that size.
3. Use Graph Trace to explore a plot in the following ways:
• Move to a point and hover to move the trace cursor to that point.
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• Press or
coordinates of each point traced are displayed.
£
• Press or
update to reflect the new location of the trace. The trace cursor is positioned
on the point of the new graph or plot with the closest x value to the last point
identified on the previously traced function or graph.
• Type a number and press
with independent coordinates nearest the typed value.
• Create a persistent point that remains on the graph by pressing
trace point reaches the point you want to label. The point remains after you
exit Graph Trace mode.
Notes:
• The string undef is displayed instead of a value when you move over a point
that is not defined for the function (a discontinuity).
• When you trace beyond the initially visible graph, the screen pans to show the
area being traced.
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4. Press or choose another tool to exit Graph Trace.
Finding Points of Interest
You can use the tools on the Analyse Graph menu to find a point of interest in a
specified range of any graphed function. Choose a tool to find zero, the minimum or
maximum, the point of intersection or inflection or the numeric derivative (dy/dx) or
Integral on the graph.
1. Select the point of interest that you want to find on the Analyse Graph menu. For
example, to find a zero, press
Zero
Minimum
Maximum
Intersection
Inflection
24 Using the Scratchpad
¢
to move from point to point on the function's graph. The
¤
to move from one plot to another. The point's coordinates
·
b 6 1
non-CAS and
Exact Arithmetic
b 6 1
b 6 2
b 6 3
b 6 4
Not applicable
to move the trace cursor to the point on the plot
.
CAS
b 6 1
b 6 2
b 6 3
b 6 4
b 6 5
b 5 3
.
·
when the