Casio FXCP400 3.Press, uTo draw a circle, 0305 To draw a circle, 0306 To draw a vertical line at x, uTo write text on the Graph window, uTo draw a line tangent to a graph

uTo write text on the Graph window1.While the Graph window is active, tap [Analysis], [Sketch], and then [Text].2.On the dialog box that appears, enter the text you want and then tap [OK].•This displays the word “Text” in the lower right corner of the Graph window.3.Place the stylus on the screen and hold it there.

•This causes the text you input in step 2 to appear at the location where you are pointing with the stylus.

4.Drag the text to the location you want, and then lift the stylus from the screen.

Tip: You cannot edit text after inputting it into the Graph window.

uTo draw a line tangent to a graph1.On the Graph Editor window, register the function you want to graph.•By way of example, here we will register the following function: y = x2 – x – 2.2.Tap $ to draw the graph. Next, tap [Analysis], [Sketch], and then [Tangent].

•This displays the crosshair pointer along with its corresponding coordinate values.

3.Press 1.4.The x-value specification dialog box will have x = 1 input, so tap [OK].•This draws the tangent to y = x2 – x – 2 at x = 1.

Tip: Instead of inputting coordinate values in steps 3 and 4, you can use the cursor key or the graph controller arrows to move the pointer to the point of tangency on the Graph window.

uTo draw a line that is normal to a graph

The procedure for drawing a line that is normal to a graph is virtually identical to the procedure “To draw a line tangent to a graph”, above. The only difference is in step 2, where you need to tap [Analysis], [Sketch], and then [Normal] instead of [Tangent].

uTo graph the inverse of a function0304 To graph y = x2 – x – 2 and then overlay it with x = y2 – y – 2uTo draw a circle0305 To draw a circleuTo draw a vertical or horizontal line0306 To draw a vertical line at x = 2

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