Find the eccentricity of the hyperbola 9y 2 – 4x 2 = 36 we have the h

| Find the eccentricity of the hyperbola 9y2 – 4x2 = 36

A.

B.

C.  

D.

Right Answer is: D

SOLUTION

we have the hyperbola = 9y2 – 4x2 = 36

 –  = -1

We know that a2 = b2 (e2 – 1)

9 = 4(e2 – 1)

e =

=

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