选择题:已知函数 f(x) =|2x+4|﹣ |x﹣ 1|.(1) 求不等式 f(x) >0 的解集

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题目内容:

已知函数 f(x) =|2x+4|﹣ |x﹣ 1|.

(1) 求不等式 f(x) >0 的解集

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