Question

In a hyperbola e=2 and the length of semitransverse axis is 3 and the length of conjugate axis is

• A.
• B.
• C.
• D.

Answer 1

The correct option is B

e=2 a=3 b=?

$b^2=a^2(e^2-1)=9(4-1)=9\times 3=27$

$b=3\sqrt{3}$

$2b=6\sqrt{3}$

b=

2b=6