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设函数f(x)=tan(ωx+ϕ),(ω>0),条件P:“f(0)=0”;条件Q...
设函数f(x)=tan(ωx+ϕ),(ω>0),条件P:“f(0)=0”;条件Q:“f(x)为奇函数”,则P是Q的( )
A.充要条件
B.充分不必要条件
C.必要不充分条件
D.既不充分也不必要条件
考点分析:
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函数
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的定义域为( )
A.(-1,2)
B.(-1,0)∪(0,2)
C.(-1,0)
D.(0,2)
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若f(x)=log
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-1(x)的图象大致是( )
A.
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B.
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C.
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D.
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设0<θ<π,a∈R,
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C.
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D.
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成立.
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