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Inputting Equations

u To input an equation using a Conics Form

Example: To use a Conics Form to input the equation for a parabola with a horizontal axis (principal axis parallel with x-axis)

(1)On the application menu, tap Cto start the Conics application.

(2)On the Conics Editor window, tap q, or tap [Form] and then [Insert Conics Form].

• This displays the Select Conics Form dialog box.

(3)Select the Conics Form of the type of equation you want to graph, and then tap [OK].

•Since we want to graph a parabola with a horizontal axis in this example, select “X = A(Y – K)2 + H”. Tap [OK] to close the Select Conics Form dialog box, and display the selected equation in the Conics Editor window.

(4)Modify the equation on the Conics Editor window as required.

•Here, we will change the coefficients of the equation as follows: A = 2, K = 1, H = –2.

(5) Tap ^ to graph the equation.

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