2-10-3

Using the Main Application in Combination with Other Applications

(3)Drag the stylus across “x^2 – 1” in the work area to select it.

(4)Drag the selected expression to the Graph window.

•This graphs y = x2 – 1. This graph reveals that the x-intercepts are x = ±1.

Tip

•As can be seen in the above example, a graph can be drawn when you drop an expression in the form of f (x) into the Graph window. In the case of the 3D Graph window, the expression must be in the form of f (x,y).

•For more information about the Graph window, see Chapter 3. For more information about the 3D Graph window, see Chapter 5.

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