Question

设双曲线y2/a2－x2/3=1的两个焦点分别为F1F2,其离心率为2.求两条准线方程

Answer 1

e=c'/a'=2

c'=2a'

c'²=4a'²

这里a'²=3

所以c'²=12

c'=2√3

所以准线x=±a'²/c'=±√3/2