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已知:若函数y=f(x)的定义域是[0,2],则函数g(x)=的定义域是 .
已知:若函数y=f(x)的定义域是[0,2],则函数g(x)=
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的定义域是
.
考点分析:
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,则tanα=( )
A.-1
B.
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C.
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D.1
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f(x)=2x
3-6x
2+a在[-2,2]上有最大值3,那么在[-2,2]上f(x)的最小值是( )
A.-5
B.-11
C.-29
D.-37
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下列函数中,周期为π,且在
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上为减函数的是( )
A.
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B.
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C.
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D.
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曲线y=
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在点(-1,-1)处的切线方程为( )
A.y=2x+1
B.y=2x-1
C.y=-2x-3
D.y=-2x-2
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设f(x)=3
x-x
2,则在下列区间中,使函数f(x)有零点的区间是( )
A.[0,1]
B.[1,2]
C.[-2,-1]
D.[-1,0]
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