Drawing An Ellipse - Casio ClassPad 330 User Manual

k Drawing a Circle by Specifying the Coefficients of a General Equation
Example: To draw the circle
u ClassPad Operation
(1) In step (2) of the procedure under "Drawing a Circle by Specifying a Center Point and
Radius", select "AX
(2) Substitute the following values for the coefficients: A = 1, B = 4, C = –6, D = 9.

Drawing an Ellipse

You can draw an ellipse by specifying coefficients for the standard equation:
x y
2 2
( – H) ( – K)
+
2 2
A B
Example: To draw the ellipse
u ClassPad Operation
(1) On the Conics Editor window, tap q , or tap [Form] and then [Insert Conics Form].
• This displays the Select Conics Form dialog box.
(X – H)
(2) Select "
2
A
• This closes the Select Conics Form dialog box, and displays the selected equation in
the Conics Editor window.
(3) Change the coefficients of the equation as follows: A = 2, B = 3, H = 1, K = 2.
(4) Tap ^ to graph the equation.
Drawing a Conics Graph
x y x
2 2
+ + 4
2 2
+ AY + BX + CY + D = 0".
= 1.
x
2
( – 1)
+
2
2
2 2
(Y – K)
" and then tap [OK].
+ = 1
2
B
4-3-5
y
– 6 + 9 = 0
y
2
( – 2)
= 1
2
3
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