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中学生数学2001年6(月上)刊登了一篇题为《数形结合也有繁简之别》的文章.文中采用数形结合的思想方法从各个侧面剖析了函数y=2sinθ-2/cosθ-3最值的求法,但针对这一道题或者这一类型的题目采用数形结合的方法反为不便.因为随着题目的改变数与形结合的方法也随之改变.因此,本文给出两种简便易操作的方法,供读者参考.下面就原文例给出解法来说明.
The middle school student’s mathematics (March 6th, 2001) published an article titled “Combination of Numbers and Forms.” This article uses the idea of combination of numbers and shapes to analyze the function y=2sinθ-2/cosθ- from all sides. 3 The method of the most value, but it is inconvenient to use the combination method of number and shape for this problem or this type of problem. Because the method of combining number with shape changes with the problem, it also changes. Therefore, this paper gives two A simple and easy-to-use method for readers’ reference. The following example gives the solution to illustrate.