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现实生活中广泛存在着数量之间的等量关系,“方程”模型是研究现实世界数量关系的最基本的数学模型,它可以帮助人们从数量关系的角度更准确、更清晰地认识现实世界.诸如行程、工程、营销最优方案等问题,常可以抽象成“方程”模型,通过列方程加以解决。下面结合2014年的中考试题谈一下在实际问题中,如何建立分式方程模型解决问题,希望对同学们的学习有所帮助。一、行程类问题例1(2014年贵阳)2014年12月26日,西南真正意义上的第
In real life, there is a widespread relationship between quantities. The “equation” model is the most basic mathematical model for studying the quantitative relations in the real world. It can help people understand the reality more accurately and clearly from the perspective of quantitative relations The world, such as itinerary, engineering, marketing and other optimal programs and other issues, can often be abstracted into “equation ” model, through the column equation to be solved. The following combination of 2014 exam questions about practical problems, how to establish a fractional equation model to solve the problem, hoping to help students learn. First, the travel class problem Example 1 (Guiyang in 2014) December 26, 2014, the Southwest in the true sense of the first