Graphing an Inverse Function. Casio FX-9750G

10 - 2

Graphing with the Sketch Function

2. Use the cursor keys ( f

, c

, d

, e

) to move the pointer the position of the point where you want to draw the line.

e

~ e

3. Press w to draw the line.

w

P.33

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To draw a line normal to a curve in the RUN or PRGM Mode

The following is the syntax for drawing a line normal to a curve in these modes.

Normal <graph function>, < x -coordinate>

• Use the variable data (VARS) menu to specify the function to be graphed.

k Graphing an Inverse Function

This function lets you graph the inverse of the function used to produce your original graph.

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To graph an inverse function in the GRAPH or TABLE Mode

Example To graph the inverse of y = x ( x + 2)( x – 2)

After graphing the function, display the sketch menu and press 4 (Inv).

!4

(Sketch) 4 (Inv)

• When graphing an inverse function when there is more than one graph function stored in memory, select one of the functions and then press w .

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