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本文以一道动点引起线段长度变化问题为研究对象,对其解法进行探究,提炼通式通法,希望对初中生的学习能够提供帮助.解决动点最值问题的方法一般有两种:一是合情推理找临界点;二是建立函数模型演绎推理.本文重点介绍第二种方法.题目(2014年宁波中考题)如图1,已知线段AB=10,点P是AB上的动点,在AB同侧分别以AP、PB为边作正方形APCD和正方
In this paper, we take a moving point to change the length of the line segment as the research object, to explore its solution method, refining the general method, hope to help junior high school students to learn.To solve the problem of the most value point method generally there are two: one Is a reasonable reason to find the critical point; the second is to establish the function model deductive reasoning .This article focuses on the second method. Subject (Ningbo 2014 test questions) shown in Figure 1, known line AB = 10, P is the point on the AB Point, respectively, in the same side of AB to AP, PB side for the square APCD and square