06-06-2016
Mathematics

Answered

Y^2 - x^2 = 4 is it an ellipse, or a circle

Verified Answer :

stringman stringman

06-06-2016

This is actually a hiperbole.The circle's equation (which is a special case of ellipsis) is actually x^2 + y^2 = r^2.With your equation it would be like x^2 + y^2 = -4, which would basically make the radius value negative, which is invalid (well, not invalid, but you get the meaning, I guess).

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