Posted by amaa on Friday, November 30, 2012 at 3:54am.
Find the vertices, foci, and eccentricity of the ellipse. Thank you.
x^2/16 + y^2/25 = 1

math  Reiny, Friday, November 30, 2012 at 8:29am
a^2 = 16 > a=4
b^2 = 25 > b = 5
major axis along the yaxis,
vertices (4,0) , (4,0) , (0,5) , (0, 5)
c^ + 4^2 = 5^2
c = ±3
foci : (0,3) , (0, 3)
e = c/b for an ellipse like that
= 3/5