Shading Areas On A Graph - Texas Instruments TI-80 Manual Book

Shading Areas on a Graph

There are three shading instructions on the DRAW DRAW menu: SHADE_Y>,
SHADE_Y<, and SHADE(. These instructions are not interactive; they must be
entered on the Home screen or in the program editor.
Shading Areas
above a Function
SHADE_Y> ( DRAW DRAW,
arguments (functions of
SHADE_Y> function
SHADE_Y> function1
When executed, SHADE_Y>
the graph and shades the area above the function with a
pattern.
The patterns for shading are automatically assigned in the
following order.
Function 1 Vertical pattern.
Function 2 Diagonal pattern, lower left to upper right.
Function 3 Diagonal pattern, upper left to lower right.
Function 4 Horizontal pattern.
When you specify multiple functions, the shading is done
sequentially.
item 6) takes up to four
X ).
. . .
, , function4
plots the specified function(s) on
Draw Operations 7-7