将抛物线y=x2平移得到抛物线y=x2+3,则下列平移过程正确的是( )A.

将抛物线y=x²平移得到抛物线y=x²+3,则下列平移过程正确的是( )

A. 向上平移3个单位 B.向下平移3个单位

C. 向左平移3个单位 D. 向右平移3个单位

答案

解析:略

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