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我们在小学阶段就学习了大量的应用问题,并且多用算术解法求解,但是进入中学后,我们多了很多工具,比如方程、函数,这些好工具使得思考问题的难度常常要低于算术解法,也体现了生活问题的多样化求解角度.下面结合考题讲解“方程·函数”在应用问题中的作用.例1(2013·江苏连云港)小林准备进行如下操作实验:把一根长为40 cm的铁丝剪成两段,并把每一段各围成一个正方形.
We learned a lot of application problems in elementary school and used many arithmetic solutions to solve them. However, after entering high school, we have many tools, such as equations and functions. These good tools make it often more difficult to think about problems than to solve arithmetic problems. Example 1 (2013 · Lianyungang, Jiangsu) Kobayashi ready to conduct the following operation experiment: the length of a 40 cm The wire cut into two sections, and each surrounded by a square.