Casio FX-CG10 Software User Guide - Page 183
Graph, Example, Draw a line that is tangent to point 2, 0 on the graph for, Line Color
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8. Use the cursor keys to move the pointer ( ) to the location where you want to draw, and press w.*3 *1 The above shows the function menu that appears in the Graph mode. Menu items may differ somewhat in other modes. *2 In the case of an inverse function graph, drawing starts immediately after you select this option. The line style and color setting selected for the Setup screen "Sketch Line" and "Plot/LineCol" settings are always applied for an inverse function graph. *3 Some sketch functions require specification of two points. After you press w to specify the first point, use the cursor keys to move the pointer to the location of the second point and press w. Example Draw a line that is tangent to point (2, 0) on the graph for y = x (x + 2) (x - 2). 1 m Graph 2 !3(V-WIN)1(INITIAL)J 3 !m(SET UP)cccccccc1(COLOR)b(Black) c1( )J 4 3(TYPE)1(Y=)v(v+c)(v -c)w 5 6(DRAW) 6 !4(SKETCH)2(Tangent) 7 !f(FORMAT)b(Line Style)f(Thin) c(Line Color)d(Red)J 8 e~ew*1 *1 You can draw a tangent line in succession by moving the pointer and pressing w. 5-51