Conics Everything

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11 Terms

1
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Circle

X² + y² = r²

2
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Parabola

Y = x²/4p

3
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Parabola directrix

Y = -p

4
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Parabola focus

(0, p) or (p, 0)

5
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Ellipse

X²/a + y²/b = 1

6
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Ellipse string length

Length of the major axis

7
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Ellipse focus

Draw triangle and use rules to figure stuff out and find the focus

8
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Ellipse, length of minor axis to focus

Half of string length

9
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Hyperbola

X²/a - y²/b = 1

10
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Hyperbola asymptotes

Isolate y, get rid of the numbers that aren’t attached to the variables (y = + or - ____x)

11
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Distance formula

√((x2 - x1)² + (y2 - y1)²)