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我们在学习分式一章时,经常会遇到求分式的值的问题.这类问题技巧性强,解题时如果不注意题目的结构特征,采用恰当的方法,往往计算量很大,甚至无法求得.现举例说明.
When we are learning the chapter, we often encounter the problem of asking for fractional values. This type of problem is very skillful. If we do not pay attention to the structural features of the topic when solving problems, using appropriate methods often leads to large calculations. It can’t even be obtained. Here is an example.