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分式方程的应用是解分式方程的延伸和深化,有些同学之所以恐惧应用题,主要是因为不会列方程,这里的原因有两点:一是找不到题中恰当的等量关系,因为有些题中的等量关系不是唯一的;二是不会用关系式进行量之间的转换.本文拟通过一个例子来说明列分式方程解决实际问题的具体思维过程,希望能对大家有所启发。例1南水北调中线干线北京段正在施工,某施工单位准备对一段长2200米的河堤进行加固,由于采用了新的加固模式,现在每天加固的长度是原计划加固长度的1.1倍,因而完成河堤加固工程
The application of fractional equation is the extension and deepening of solution division equation. Some students fear the application of the problem, mainly because the equation can not be listed. There are two reasons for this: First, we can not find the right equivalence relation , Because the equivalence relation in some questions is not the only one, and the second one is that it does not use the relational formula to convert between quantities.This paper intends to illustrate the specific thinking process of solving the fractional equation by solving the practical problems through an example, Inspired Example 1 The midline of the South-to-North Water Diversion Project is under construction in Beijing. A construction unit is going to reinforce a section of 2,200m long embankment. Due to the new reinforcement mode, the length of reinforcement per day is 1.1 times of the original planned reinforcement length, thus completing the river Dyke reinforcement project