复数
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在复平面上对应的点位于第
象限.
考点分析:
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已知双曲线
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,过其右焦点且垂直于实轴的直线与双曲线交于M,N两点,O为坐标原点.若OM⊥ON,则双曲线的离心率为( )
A.
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B.
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C.
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D.
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A.(0,1)
B.(1,2)
C.(2,3)
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已知函数f(x)=x
3-(k
2-k+1)x
2+5x-2,g(x)=k
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是否存在k,对任意给定的非零实数x
1,存在惟一的非零实数x
2(x
2≠x
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已知中心在原点的双曲线C的右焦点为(2,0),实轴长为2
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.
(1)求双曲线C的方程;
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