已知函数若关于x 的方程f(x)=k有两个不同的实根，则数k的取值范围是

已知函数若关于x 的方程f(x)=k有两个不同的实根，则数k的取值范围是_______

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（0，1）

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已知函数若关于x 的方程f(x)=k有两个不同的实根，则数k的取值范围是

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