Texas Instruments -84 Plus, Manual Book

Page: 198 / 696

Chapter 8: Draw Instructions 195
DrawInv expression
Note:
You cannot use a list in
expression
to draw a family of curves.
Shading Areas on a Graph Shading Areas on a Graph Shading Areas on a Graph Shading Areas on a Graph
Shading a Graph Shading a Graph Shading a Graph Shading a Graph
To shade an area on a graph, select
7:Shade(
from the
DRAW
menu. The instruction is
pasted to the home screen or to the program editor.
Shade(
draws
lowerfunc
and
upperfunc
in terms of X on the current graph and shades the
area that is specifically above
lowerfunc
and below
upperfunc
. Only the areas where
lowerfunc
<
upperfunc
are shaded.
Xleft
and
Xright
, if included, specify left and right boundaries for the shading.
Xleft
and
Xright
must be numbers between
Xmin
and
Xmax
, which are the defaults.