Texas Instruments TI-84 PLUS SILV Guidebook - Page 135
Shading Areas on a Graph, Drawing Circles, Shading a Graph, Drawing a Circle Directly on a Graph
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Shading Areas on 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(lowerfunc,upperfunc[,Xleft,Xright,pattern,patres]) MathPrint™ Classic 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. pattern specifies one of four shading patterns. pattern=1 pattern=2 pattern=3 pattern=4 vertical (default) horizontal negative-slope 45¡ positive-slope 45¡ patres specifies one of eight shading resolutions. patres=1 patres=2 patres=3 patres=4 patres=5 patres=6 patres=7 patres=8 shades every pixel (default) shades every second pixel shades every third pixel shades every fourth pixel shades every fifth pixel shades every sixth pixel shades every seventh pixel shades every eighth pixel Drawing Circles Drawing a Circle Directly on a Graph To draw a circle directly on a displayed graph using the cursor, follow these steps. 1. Select 9:Circle( from the DRAW menu. Chapter 8: Draw Instructions 128