三角条件等式证明题的解题技巧

• 作 者: 陈天佐
• 机 构: 江苏省射阳县陈洋中学,
• 出 处: 语数外学习(高中版中旬)
• 发表日期: 2016年07期
• 关键词: 解题技巧 证明题 数学命题 题干 逆推 此方 参考资料 知原 法时 推证

三角条件等式涉及的知识面比较广,综合性比较强,而教科书一般是以例题和习题的形式出现,不作系统的介绍,因此学生普遍感到无章可循,难度较大。证明三角条件等式的关键是观察题设条件和结论的特征,分析条件和结论之间的内在联系,不断探索规律,并且还要总结过往证明题的解题方法和技巧,丰富解题经验。本文将举例说明三角条件等式证明题的解题技巧并进行深入的探究。一、分析法从所要证明的结论出发,寻求结论成立

Triangular condition equation involves a wide range of knowledge, more comprehensive, and textbooks are usually in the form of examples and exercises appear, not a systematic introduction, so students generally feel out of boundless, more difficult. The key to proving the trigonometric condition equation is to observe the characteristics of the inscribed conditions and conclusions, to analyze the internal relations between the conditions and conclusions, to constantly explore the law, and to summarize the solutions and techniques of problem solving in the past and to enrich the experience of solving problems. This article will give an example of the triangle condition equation proving problem solving skills and in-depth exploration. First, the analytical method from the conclusions to be proved, to seek the conclusion set