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[函数] 函数问题

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hjfmhh Posted 2016-1-16 22:40 |Read mode

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kuing Posted 2016-1-16 23:33

关于 m 一次，故最值必在 m 取端点时取得，代 m=4 和 m=5 进去分别求下范围比较下就是了

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