我们在函数学习中,经常会碰到一些似曾相识的问题,让我们一下子迷茫起来,以致于出现这样或是那样的错误,老师告诫我们克服这种情况的关键是要慎重审题、保证题意转化的等价性,但自己每每遇见此类问题却依旧是屡屡碰壁.近来花了些工夫认真整理,尝试进行题组训练,厘清细节区别、关注内在联系,觉得有较大收获,有助于突破此类函数问题学习 In functional learning, we often encounter some deja vu problems. Let us suddenly confused so that one way or another mistakes occur. The teacher warned us that the crux of overcoming this situation is to carefully examine the questions and ensure that the questions are translated However, I often encounter such problems but I often hit the wall recently took some time to carefully organize and try to group training to clarify the details of the differences, pay attention to the intrinsic link, that there is a greater gain, and help to break through Such function problem learning