Texas Instruments TI-86 - Manual (Page 116)

104
Chapter 6: Graph Tools
06TOOLS.DOC TI-86, Chap 6, US English Bob Fedorisko Revised: 02/13/01 2:23 PM Printed: 02/13/01 3:01 PM Page 104 of 22 06TOOLS.DOC TI-86, Chap 6, US English Bob Fedorisko Revised: 02/13/01 2:23 PM Printed: 02/13/01 3:01 PM Page 104 of 22
Shading Areas of a Graph
To shade an area of a graph, the syntax is:
Shade( lowerFunc , upperFunc ã , xLeft , xRight , pattern , patternRes ä )
pattern specifies one of four shading patterns.
1 vertical (default)
2 horizontal
3 negative slope( 45 ¡)
4 positive slope (45 ¡)
patternRes specifies one of eight shading resolutions.
1 every pixel (default)
2 every second pixel
3 every third pixel
4 every fourth pixel
5 every fifth pixel
6 every sixth pixel
7 every seventh pixel
8 every eighth pixel
♦
The area that is specifically above lowerFunc and below upperFunc is shaded.
♦
xLeft > xMin and xRight < xMax must be true.
♦
xLeft and xRight specify left and right bounds for shading. ( xMin and xMax are defaults.)
These GRAPH DRAW menu items are interactive. Also, you can use all of them, except PEN ,
on the home screen or in a program (A to Z Reference).
LINE Draws a line segment from one point to another point you specify with the cursor
VERT Draws a vertical line, which you can move to any displayed x value
To replicate the example
without additional graphs,
turn off all equations and stat
plots before entering the
instructions as shown.