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已知函数. (Ⅰ)求函数f(x)的单调区间; (Ⅱ)若a=1时,对任意x1,x2∈R,当x1<x2,有f(x1)=f(x2),求证:f(x1)>f(2﹣x2).
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高二下学期数学《2017-2018学年吉林省实验中学高二(下)期中数学试卷(文科)》真题及答案
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