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函数在x=1处取到唯一的极值点，这怎么理解？高考数学，导数部分
函数在x=1处取到唯一的极值点，这怎么理解？高考数学，导数部分！构造函数，单调函数判断，最值问题
高三数学二轮复习 高考数学大题满分 各种函数和导数综合问题全集20/60
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