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已知抛物线的解析式为y=-(x-3)2+1,则它的顶点坐标是( ) A.(3,1...
已知抛物线的解析式为y=-(x-3)2+1,则它的顶点坐标是( )
A.(3,1)
B.(-3,1)
C.(3,-1)
D.(1,3)
考点分析:
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