7-8 Draw Operations
SHADE_Y< (DRAW DRAW, item 7) takes up to four
arguments (functions of X).
SHADE_Y<function
SHADE_Y<function1, . . . ,function4
When executed, SHADE_Y< plots the specified function(s) on
the graph and shades the area below the function with a
pattern.
The patterns for shading are automatically assigned in the
following order.
Function 1 Horizontal pattern.
Function 2 Diagonal pattern, upper left to lower right.
Function 3 Diagonal pattern, lower left to upper right.
Function 4 Vertical pattern.
Note that the patterns are assigned in reverse order from the
SHADE_Y> patterns.
When you specify multiple functions, the shading is done
sequentially.
Shading Areas
below a Function