论文部分内容阅读
这里的“特定解”是指分式方程解的四种特殊情况,求“特定解”下的未知常数应做到具体问题具体分析.现举例说明:1无解型例1已知关于x的方程x/x-5=3+a/5-x无解,求a.分析分式方程的“无解”是由两种情形生成的:其一,分式方程化成的整式方程无解,致使原方程无解;其二,分式方程化成的整式方程虽有解,而此解使最简公分母的值为0,此时,分式方程也无解.
Here “specific solution ” refers to the four special cases of fractional equation solution, seeking unknown constants under “specific solution ” should do specific analysis of the specific problems. Knowing that the equation x / x-5 = 3 + a / 5-x for x has no solution, find a. The “no solution” for analyzing a fractional equation is generated from two cases: The integral equation has no solution, resulting in no solution to the original equation. Second, although the integral equation formed by the fractional equation has a solution, and the solution causes the value of the simplest common denominator to be zero, the fractional equation has no solution at this time.