双曲线x²/a²-y²/b²=1与直线y=2x有交点,则双曲线的离心率e的范围是?
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双曲线x²/a²-y²/b²=1与直线y=2x有交点,则双曲线的离心率e的范围是?
双曲线x²/a²-y²/b²=1与直线y=2x有交点,则双曲线的离心率e的范围是?
双曲线x²/a²-y²/b²=1与直线y=2x有交点,则双曲线的离心率e的范围是?
渐近线的斜率b/a>2
b^2>4a^2
c^2>5a^2
e>√5