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函数f(x)=sinx-cosx(x∈[-π,0])的单调递增区间是( ) A....
函数f(x)=sinx-
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cosx(x∈[-π,0])的单调递增区间是( )
A.[-π,-
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]
B.[-
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,-
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]
C.[-
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D.[-
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已知函数
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(-1≤x≤0)的反函数是( )
A.
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B.
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D.
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设集合M={1,2,3,4,5,6},S
1,S
2,…,S
K都是M的含两个元素的子集,从中任选两个S
i,S
j,S
i={a
i,b
i},S
j={a
j,b
j},(i≠j),i,j∈{1,2,3,…,k},则
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≠
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函数y=log
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