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bergen ellipses

Stack #13963

QuestionAnswer
eq. of ellipse [^v] (x-h)^2/a^2 + (y-k)^2/b^2 = 1
eq.[<>] (x-h)^2/b^2 + (y-k)^2/a^2 = 1
center[^v] (h,k)
center[<>] (h,k)
Major axis endpts[^v] (h+a,k) & (h-a,k)
Major axis endpts[<>] (h,k+a) & (h,k-a)
Minor axis endpts[^v] (h,k+b) & (h,k-b)
Minor axis endpts[<>] (h+b,k) & (h-b,k)
a, b &c[^v] a^2 - b^2=c^2
a, b &c[<>] a^2 - b^2=c^2
coordinates of foci [^v] (h+c,k) & (h-c,k)
coordinates of foci [<>] (h,k+c) & (h,k-c)
Created by: karbear
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