Texas Instruments TI-Nspire Getting Started page 36

• Press
coordinates of each point traced are displayed.
• Press
coordinates 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
on the plot with independent coordinates nearest the typed value.
• Create a persistent point that remains on the graph by pressing
when the 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.
d
3. Press
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
36 Using the Scratchpad
¡ ¢
or to move from point to point on the function's graph. The
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or to move from one plot to another. The point's
or choose another tool to exit Graph Trace.
non-CAS
b 6 1
b 6 2
b 6 3
b 6 4
·
to move the trace cursor to the point
b 6 1
CAS
b 6 1
b 6 2
b 6 3
b 6 4
·
.