已知双曲线x2a2-y2b2=1的一个焦点与抛物线y2=4x的焦点重合，且双曲线的离心率等于5，则该双曲线的方程为( )_刷题宝

题干

已知双曲线

x

2

a

2

-

y

2

b

2

=1的一个焦点与抛物线y2=4x的焦点重合，且双曲线的离心率等于5，则该双曲线的方程为( )

A： $5 x^{2} - \frac{4}{5} y^{2} = 1$

B： $\frac{x^{2}}{5} - \frac{y^{2}}{4} = 1$

C： $\frac{y^{2}}{5} - \frac{x^{2}}{4} = 1$

D： $5 x^{2} - \frac{5}{4} y^{2} = 1$

上一题下一题 0.0难度选择题更新时间:2019-12-31 09:52:34

答案(点此获取答案解析）

D

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