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已知函数f (x)=cos(x+φ) (0<φ<π)在x=时取得最小值,则f(x...
已知函数f (x)=cos(x+φ) (0<φ<π)在x=
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时取得最小值,则f(x)在[-π,0]上的单调增区间是( )
A.[
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]
B.[
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]
C.[
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,0]
D.[-π,
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]
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