受思维定式的影响,绝大多数的同学总认为分式方程的增根就是使分式方程分母为零的未知数的值,而导致分式方程无解的原因是去分母产生增根所致.因此,他们在求“含有字母系数的分式方程何时有增根,何时无解”这一类问题时,经常出现错误.为此,笔者结合例题,谈谈对它们之间关系的理解,以帮助同学们摆脱思维定式的束缚,正确答题. By thinking mode, the vast majority of students always think that the root of the fractional equation is the value of the unknowns that make the fractional equation denominator zero, and the reason that the fractional equation has no solution is that the denominator produces rooting. Therefore, they often make mistakes in seeking such problems as when the fractional equation containing alphabetic coefficients has roots and when there is no solution. For this reason, I will combine the examples to talk about the relationship between them Understanding, to help students get rid of the shackles of thinking, the correct answer.