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下列函数中,图象与x轴没有公共点的是A.y=-x+1B.y=x+1C.y=-x2+1D.
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下列函数中,图象与x轴没有公共点的是( )
A.y=-x+1
B.y=x+1
C.y=-x
2+1
D.
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下列函数中,图象与x轴没有公共点的是( )
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B.y=2x+1
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