- #1

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The general: ##Ax^2 + Bxy + Cy^2 + Dx + Ey + F = 0##

And the parametric: ##y^2 = 2px + (e^2-1)x^2##

In polar coordinates, I known just the parametric: ##r = \frac{p}{1+e\cos(\theta)}##

But exist a general form too?

- Thread starter Jhenrique
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- #1

- 685

- 4

The general: ##Ax^2 + Bxy + Cy^2 + Dx + Ey + F = 0##

And the parametric: ##y^2 = 2px + (e^2-1)x^2##

In polar coordinates, I known just the parametric: ##r = \frac{p}{1+e\cos(\theta)}##

But exist a general form too?

- #2

mfb

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- #3

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But what you are suggesting is a transformation... I'm not looking for this, but yes by a general expression/format that is a conic but is independent of the cartesian format...

- #4

mfb

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Ahhh, does not matter... thanks of anyway

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