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20050501
4-2-1
Inputting Equations
4-2 Inputting Equations
This section explains the various ways you can input equations using the Conics Editor
window.
Using a Conics Form to Input an Equation
Preset formats can help you input conics equations quickly and easily. The following table
contains a complete list of the types of equations that you can input just by tapping [Form]
and then [Insert Conics Form].
Equations
Horizontal Parabola 1
x = A
·
(y – K)^2 + H
Horizontal Parabola 2
x = A
·
y^2 + B
·
y + C
Vertical Parabola 1
y = A
·
(x – H)^2 + K
Vertical Parabola 2
y = A
·
x^2 + B · x + C
Circle 1
(
x – H)^2 + (y – K)^2 = R^2
Circle 2
A
·
x^2 + A
·
y^2 + B
·
x + C
·
y + D = 0
Ellipse
(
x – H)^2 ÷ A^2 + (y – K)^2 ÷ B^2 = 1
Horizontal Hyperbola
(
x – H)^2 ÷ A^2 – (y – K)^2 ÷ B^2 = 1
Vertical Hyperbola
(
y – K)^2 ÷ A^2 – (x – H)^2 ÷ B^2 = 1
General Form
A
·
x^2 + B
·
x
·
y + C
·
y^2 + D
·
x + E
·
y + F = 0
Conics Forms
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