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函数f(x)=2-x|log0.5x|-1的零点个数为( ) A.1 B.2 C...
函数f(x)=2-x|log0.5x|-1的零点个数为( )
A.1
B.2
C.3
D.4
考点分析:
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在△ABC中,
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,则sin∠BAC=( )
A.
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D.
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C.2
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