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《中学生数学》2005年8月上金日升老师在《如何平移二次函数图像》一文中,将二次函数图像平移规律进行了总结,并按正向平移、逆向平移、特殊平移进行分类．笔者以为:这样的总结,事必要学生死记,而死记极易出错．事实上,图像平移是图像上的点整体移动,即图像上每个点均向同一方向移动相同的长度单位．此时,我们只要考虑一点移动情况即可,一般当然选择顶点,亦即图像平移只要考虑顶点平移即可．
“Middle school mathematics” in August 2005, Kim Il Sung teacher in the “How to translate quadratic function image” article, the quadratic function image translation law is summarized, and forward translation, reverse translation, special translation for classification. The author thinks: Such a summary, the student must be remembered, and the death record is prone to error. In fact, image translation is the overall movement of the point on the image, that is, each point on the image moves the same length unit in the same direction. At this point, we only need to consider a little movement. Generally, we choose the vertex. That is, the translation of the image can be considered as long as the translation of the vertex is considered.