20050501
4-3-1
Drawing a Conics Graph
4-3 Drawing a Conics 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.
k
Drawing a Parabola that Opens 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
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 “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 300 PLUS
Page 11: ...20050501 ClassPad 300 PLUS ClassPad OS Version 2 20 ...
Page 197: ...20050501 2 10 7 Using Verify 4 Input x 2 1 and press E 5 Input x i x i and press E ...
Page 649: ...20050501 u Graph Line Clustered D u Graph Line Stacked F 13 8 2 Graphing ...
Page 650: ...20050501 u Graph Line 100 Stacked G u Graph Column Clustered H 13 8 3 Graphing ...
Page 651: ...20050501 u Graph Column Stacked J u Graph Column 100 Stacked K 13 8 4 Graphing ...
Page 652: ...20050501 u Graph Bar Clustered L u Graph Bar Stacked 13 8 5 Graphing ...