已知函數(shù)
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(

,

)在
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上函數(shù)值總小于

,求實數(shù)

的取值范圍.
要使函數(shù)
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(
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,

)在

上函數(shù)值總小于

,只要
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(

,

)在

上的最大值小于

,
當(dāng)
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時,
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,解得

;
當(dāng)

時,

,解得
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;
所以
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.
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
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
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
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
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及

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
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