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[函数] 如何严格证明

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APP Posted 2016-12-18 12:10 |Read mode

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答案选A

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realnumber Posted 2016-12-18 22:05

回复 1# APP

F(x)=2min{f(x),g(1-x)}
选项A意思就是2min{f(a),g(1+a)}≥2min{f(a),g(1-a)},你只需要去证明g(1+a)≥g(1-a)
且
2min{f(1+a),g(a)}≥2min{f(1-a),g(a)},同理.

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