Question

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.

Answer 1

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

Answer 2

@Hero can you check this for me?

Answer 3

is 'a' semi-major axis length ??

Answer 4

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

Answer 5

Ok

Answer 6

Actually wait. Thank you @hartnn

Answer 7

welcome ^_^
any more doubts ?

Answer 8

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

Answer 9

me too :) good work!

Answer 10

Thanks :)

Answer 11

@natsu