Casio fx-CG20 Graph, Example, (x – 2), Draw a line that is tangent to point (2, 0) on the graph for y = x (x + 2)

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).

1m Graph

2!3(V-WIN)1(INITIAL)J

3!m(SET UP)cccccccc1(COLOR)b(Black)

c1()J

43(TYPE)1(Y=)v(v+c)(v -c)w

56(DRAW)

6!4(SKETCH)2(Tangent)

7!f(FORMAT)b(Line Style)f(Thin) c(Line Color)d(Red)J

8e~ew*1

*1 You can draw a tangent line in succession by moving the pointer and pressing w.

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