If a conic $ax^2+by^2+2hxy+2gx+2fy+c=0$ and say:
How to find the eccentricity and the semi-axes of this conic. I do understand that if its a hyperbola only one of the semi axes will be real.
Soham
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http://en.wikipedia.org/wiki/Rotation_of_axes#Identifying_rotated_conic_sections – lab bhattacharjee Sep 11 '12 at 16:37
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hey thanks but I am not exactly sure, how it fits with the answer. The link talks about the equation in light of rotated axes, whereas I was looking more for eccentricity – Soham Sep 11 '12 at 16:41
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https://math.stackexchange.com/questions/756220/how-to-find-centre-vertics-foci-focal-radii-letus-rectum-when-exists-of-a-gen/801572#801572 – sammy gerbil Sep 01 '20 at 00:27