已知命題p:函數(shù)
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在(0,1)內(nèi)恰有一個零點;命題q:函數(shù)
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在
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上是減函數(shù),若p且
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為真命題,則實數(shù)a的取值范圍是( )
A. | B.a(chǎn)≤2 | C.1<a≤2 | D.a(chǎn)≤l或a>2 |
試題分析:由題知,命題
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:
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,得
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,命題
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:
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,則
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,若
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且
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為真命題,則有
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,故實數(shù)
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的取值范圍是
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.
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