将抛物线绕它的顶点旋转180°，所得抛物线的解析式是（）．A

将抛物线

绕它的顶点旋转180°，所得抛物线的解析式是（）．

A．	B．
C．	D．

答案

D解析:
略

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将抛物线绕它的顶点旋转180°，所得抛物线的解析式是（ ）．A

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将抛物线绕它的顶点旋转180°，所得抛物线的解析式是（）．A