20021201
4-3-8
Drawing a Conics Graph
Drawing a General Conics
Using the conics general equation A
x
2
+ B
xy
+ C
y
2
+ D
x
+ E
y
+ F = 0, you can draw a
parabola or hyperbola whose principal axis is not parallel either to the
x
-axis or the
y
-axis, a
slanted ellipse, etc.
Example:
To draw
x
2
+ 4
xy
+
y
2
– 6
x
+ 6
y
+ 4 = 0
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.
(2) Select “AX
2
+ BXY + CY
2
+ DX + EY + F = 0” and then tap [OK].
• 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 = 1, B = 4, C = 1, D = –6, E = 6,
F = 4.
(4) Tap
^
to graph the equation.
