20060301
4-3-1
Drawing a Conics Graph
4-3 Drawing a Conic
s
Graph
This section provides examples that show how to draw various types of conics graphs.
Drawing a Parabola
A parabola can be drawn with either a horizontal or vertical orientation. The parabola type is
determined by the direction of its principal axis.
I
Drawing a Parabola that Open
s
Horizontally
A parabola with a horizontal axis is one whose principal axis is parallel to the
x
-axis. There
are two possible equations for a parabola with a horizontal axis:
x
= A(
y
– K)
2
+ H and
x
= A
y
2
+ B
y
+ C.
Example 1:
To draw the parabola
x
= 2(
y
– 1)
2
– 2
S
Cla
ss
Pad Operation
(1) On the Conics Editor window, tap
p
, or tap [Form] and then [Insert Conics Form].
• This displays the Select Conics Form dialog box.
(2) Select “X = A(Y – K)
2
+ H” 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 = 2, K = 1, H = –2.
(4)
Tap
>
to graph the equation.
Summary of Contents for ClassPad 330
Page 11: ...20060301 20090601 ClassPad 330 ClassPad OS Version 3 04 ...
Page 277: ...20060301 3 3 10 Storing Functions 3 Tap AND Plot OR Plot ...
Page 779: ...20090601 S Graph Line Clustered C S Graph Line Stacked E 13 9 2 Graphing ...
Page 780: ...20090601 S Graph Line 100 Stacked F S Graph Column Clustered G 13 9 3 Graphing ...
Page 781: ...20090601 S Graph Column Stacked I S Graph Column 100 Stacked J 13 9 4 Graphing ...
Page 782: ...20090601 S Graph Bar Clustered K S Graph Bar Stacked 9 13 9 5 Graphing ...