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这里的“特定解”是指分式方程解的四种特殊情况,求“特定解”的分式方程中未知常数,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”有两种情形:其一,分式方程化成的整式方程无解;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.解方程两边同乘(x-5),得
Here “specific solution ” refers to the four special cases of fractional equation solutions, seeking “specific solution ” unknown constant in the fractional equation, should be a specific analysis of the specific problems .Examples: 1. Solution Example 1 It is known that there is no solution to the equation x / (x-5) = 3 + a / (5-x) for x. Find a. There are two cases for analyzing “no solution” for a fractional equation: First, the integral equation into a fractional equation has no solution. Second, although there is a solution to the integral equation formulated by a fractional equation, the value of the simplest common denominator is zero, and the fractional equation has no solution. Equations on both sides of the equation (x-5), too