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函数的单调性是函数的重要性质之一,在平时学习中,同学们对于证明函数的单调性,求单调区间,比较熟悉,但对于利用函数单调性的逆命题解题,却知之较少,下面举例说明函数单调性的逆命题及其应用.
The monotony of the function is one of the important properties of the function. In the usual learning, the students are familiar with the monotonicity of the proof function and find the monotonic interval, but they know little about the inverse problem using the monotonicity of the function. The following example illustrates the monotonic inverse of the function and its application.