Find an equation of the ellipse that has center 2 3 a minor
Find an equation of the ellipse that has center (2, 3), a minor axis of length 10, and a vertex at (2. -4).
Solution
centre (2,3)
minor axis length=10
vertex =(2,-4)
The ellipse is of the form
(x-h)2/b2 + (y-k)2/a2=1
b is the semi minor axis
minor axis,2b=10
therefore b=5
Vertices =(h,k+-a)
Therefore k-a=-4
k=3
Therefore 3-a=-4
a=7
Hence the required equation is
(x-2)2/25 + (y-3)2/49= 1
