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待定系数法是中学数学的重要思想方法,除了教材中用它求函数的表达式、处理根与系数关系等的作用外,其应用还很广泛,将介绍其在分解因式、解决不定方程问题、求三角函数最值三方面问题的作用。
To be determined coefficient method is an important thought method of high school mathematics, in addition to the function of the expression used in the textbook to seek it, the role of dealing with the relationship between root and coefficient, its application is still very wide, will introduce its decomposition factor to solve the problem of indefinite equation , Find the most trigonometric function of the three aspects of the role.