在分式的学习中,一些同学出现了这样那样的错误.但他们对错误的认识不够清晰,喜欢将其归咎于马虎,认为只要细心些就可以避免了.其实,对出现的错误,不要轻易认为是马虎,就算是马虎,也要分清马虎的真实原因.由于分式的分母中含有字母,这就惹出了诸多问题,诸如分式有意义的问题、方程无解的问题、代数式求值的问题、字母取值范围的问题等.下面,我们就来看看怎样避免出现错误. In the fractional study, some students made such a mistake, but they did not understand the mistake clearly enough and liked to blame sloppy, thinking that as long as they were careful, they could be avoided. In fact, the mistakes made should not be easy Think it is sloppy, even sloppy, but also to distinguish the slightest real reason.Since the fractional denominator contains letters, which provoked a number of issues, such as fractional meaningful problems, equation no solution, algebraic evaluation The problem of the letter value range, etc. Next, let’s see how to avoid mistakes.