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当k取任意实数时,抛物线y=(x-k)2+k2的顶点所在的曲线是A.y=x2B.y=-x2...
试题详情
当k取任意实数时,抛物线y=
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)
(x-k)
2+k
2的顶点所在的曲线是( )
A.y=x
2B.y=-x
2C.y=x
2(x>0)
D.y=-x
2(x>0)
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当k取任意实数时,抛物线y=
(x-k)2+k2的顶点所在的曲线是( )
A.y=x2
B.y=-x2
C.y=x2(x>0)
D.y=-x2(x>0)
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(x-k)2+k2的顶点所在的曲线是( )
A.y=x2
B.y=-x2
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D.y=-x2(x>0)
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当k取任意实数时,抛物线y=
(x-k)2+k2的顶点所在的曲线是( )
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