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对于同学们来说,方法和速度是我们成功的前提和保障,好的方法能提高我们解题的准确率和解题速度.可以说方法对我们来说非常重要.这种方法不知你用过吗?对于数学中的一些问题,从正面处理较难,一是解题思路不明朗,二是需要考虑的因素太多,要分多种情况讨论,运算量大,且讨论不全,又容易出现错误,这时如用补集思想,考虑其对立面,可以达到化繁为简的目的,收到意想不到的效果.
For classmates, methods and speeds are the precondition and guarantee of our success. Good methods can improve the accuracy of our problem solving and speed of problem solving. It can be said that the method is very important to us. This method is not used by you. For some problems in mathematics, it is more difficult to deal with problems from the front. First, the problem-solving ideas are not clear. Second, there are too many factors that need to be considered. They must be discussed in various situations. The calculation volume is large, and the discussion is incomplete. Errors. At this time, if you use complementary thoughts and consider the opposite, you can achieve the purpose of simplifying and simplifying, and receive unexpected results.