Texas Instruments TI-83 Plus Manual Book page 41

Message
No points found in
this window
PoI not available
for lists
Shading
intersection of
inequalities only
Need at least two
inequalities
Need at least two
relations
Inequality Graphing for the TI-83 Plus
Description
One of the following situations exist:
•
There are no points of interest ("intersection" points) at
all.
•
The points of interest exist outside of the current
window. Press F and change
to change the current window.
•
The solver is not able to find the points of interest for
non-linear relations. See
with Pol-Trace
interest.
The PoI-Trace feature is not available when one or more of
the Y-variables contains a list.
One or more of the selected X-variables and Y-variables is
an equation. The Inequality Graphing application shows the
intersections of the inequalities even though equations are
graphed.
At least two inequalities must be defined and selected in
order to shade the inequality intersection.
At least two relations (equations or inequalities) must be
defined and selected to shade the union.
Exploring Non-linear Functions
for details on how to find these points of
Xmin Xmax
and/or
Page 41