Find an equation that models a hyperbolic lens with a = 16 inches and foci that are 40 inches apart. assume that the center of the hyperbola is the origin and the transverse axis is vertical.

Question

anonymous · Answer

My answer is y^2/256  - x^2/144 = 1

anonymous · Answer

@Hero can you check this for me?

hartnn · Answer

is 'a' semi-major axis length ??

hartnn · Answer

http://www.wolframalpha.com/input/?i=y%5E2%2F256++-+x%5E2%2F144+%3D+1 then click on 'Properties'

anonymous · Answer

Ok

anonymous · Answer

Actually wait.  Thank you @hartnn

hartnn · Answer

welcome ^_^
any more doubts ?

anonymous · Answer

No, actually I'm good :) I believe that it's right @hartnn

hartnn · Answer

me too :) good work!

anonymous · Answer

Thanks :)

anonymous · Answer

@natsu