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我们通常所说的图像平移规律的口诀,其实是指函数、三角函数的图像平移,从这个角度来讲,“左加右减,上加下减”和“左加右减,上减下加”这两个口诀,在使用层面上是相同的,但是我们对数学知识的理解,不能仅仅满足于其局部的应用层面,而是要追求客观规律的契合性、数学思想的统一性、知识结构的完整性,更何况考核内容其实也在发展变化,更加倾向于考查学生对于数学思想的掌握和灵活的运用。基于在教学实践中的研究,笔者将多角度阐述图
We usually refer to the formula of image translation rule, in fact refers to the function, trigonometric function image translation, from this perspective, “left plus right minus, up plus down” and “left plus right minus, on Reduce ”and" these two formulas are the same in terms of usage, but our understanding of mathematical knowledge can not only be satisfied with the application of its local level, but to pursue the conformity of objective laws and the unification of mathematical ideas Sex, the integrity of the knowledge structure, not to mention the fact that the content of the examination is also evolving, more inclined to examine the students grasp of mathematical ideas and flexible use. Based on the research in teaching practice, I will explain the picture from different perspectives