与x^2/4 - y^2=1有相同渐近线的双曲线是

问题描述:

与x^2/4 - y^2=1有相同渐近线的双曲线是
A.y^2/4 - x^2=1 B.x^2/16 - y^2/8=1 C.x^2/4 - y^2=-2 D.x^2/4 + y^2=1

解析:双曲线x²/a²-y²/b²=1的渐近线方程是x²/a²-y²/b²=0有相同渐近线的双曲线组是x²/a²-y²/b²=m,m≠0即可题目中:x²/4-y²=1的渐近线是x&sup...