所谓整体思想，就是从整体的角度出发去思考问题，把注意力和着眼点放在问题的整体上，或把一些相互联系的量视为一个整体来处理的思维方法．运用整体思想解题，应注意从全局着眼，全面、系统地观察分析整体与局部、整体与结构的关系，从而把握问题的本质，求得解题捷径．例1化 The so-called whole idea is to consider the problem from the perspective of the whole, to focus attention and focus on the problem as a whole, or to treat some interrelated quantities as a whole to deal with the way of thinking. To use the overall thinking to solve problems, we should pay attention to the overall situation, comprehensively and systematically observe and analyze the relationship between the whole and the local, the whole and the structure, so as to grasp the essence of the problem and find the shortest way to solve the problem. Example 1