设f（x）= |111x−11x221| （x∈R），则方程f（x）=0的解集为_1．_刷题宝

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设f（x）= |111x−11x221| （x∈R），则方程f（x）=0的解集为____．

上一题下一题 0.0难度选择题更新时间:2018-04-06 07:38:20

答案(点此获取答案解析）

{﹣1，1}

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