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Inputting Equations

Inputting an Equation Manually

To input an equation manually, make the Conics Editor window active, and then use the soft keyboard for input.

Input the equation here.

Conics Editor window

Transforming a Manually Input Equation to a Conics Form

After you manually input an equation on the Conics Editor window, you can use the procedure below to transform it to a preset Conics Form.

Example: To transform the equation (x – 1)2+ (y – 2)2 =

x2

to the standard Conics Form

 

x = Ay2 + By + C

22

4

 

uClassPad Operation

(1)On the Conics Editor window, input the above equation.

Hint: Tap the )tab of the soft keyboard. The 2D fraction and 2D exponent are very helpful in entering this equation!

(2)After inputting the equation, tap wor tap [Fit] and then [Fit into Conics Form].

This displays the Select Conics Form dialog box.(3)Select “X = AY2 + BY + C” and then tap [OK].This transforms the equation so it becomes x = 2y2 – 8y + 172 .

Tip

If the equation you input cannot be transformed into the standard Conics Form you selected, the message “Can’t Transform into This Type” appears.

An input equation may not transform correctly if it includes a square root calculation or some other function.

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