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求阴影部分图形的面积是极其常见的一类问题.通常情况下,我们都会根据题目所给图形的特点,将它们分解、转化成我们所熟悉的规则图形来求解.但在转化的过程中方法是多种多样的,那么,我们该如何去把握呢?本文力求通过具体实例阐述我们经常使用的几种方法,希望对读者有所帮助.一、简单图形直接求面积若题目所给的图形中,有的图形是我们熟悉的基本图形,我们可以首先求出该图形的面积.例1如图1所示,已知矩形ABCD中,AB
It is extremely common to find the area of the shaded part of the graph, which is usually solved by decomposing them according to the characteristics of the graph given by the subject and transforming them into the familiar regular graph. However, in the process of conversion, Is a variety of ways, then how can we grasp it? This article seeks to illustrate several examples of our frequently used methods, I hope to help the reader. First, the simple graphics directly seeking area If the title of the graphics , Some graphics are familiar with the basic graphics, we can first find the area of the graphics. Example 1 As shown in Figure 1, known ABCD rectangular, AB