Texas Instruments TI-nspire Getting Started page 34

2. (Optional) To change the trace step increment for tracing, press
b 5 3
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.
• 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
4. Press
34 Using the Scratchpad
.
¡ ¢
or to move from point to point on the function's graph. The
£ ¤
or to move from one plot to another. The point's
or choose another tool to exit Graph Trace.
·
to move the trace cursor to the point
·