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函数思想的应用主要表现在:一是借助初等函数的性质,解决相关问题;二是通过函数关系或构造中间函数,转化所研究的问题,化难为易,化繁为简,函数思想和方程思想密切相关,方程的问题可以用函数的方法解决,反之,函数问题也可以用方程的方法来解决.函数和方程思想为解决数学综合题提供了思路和方法,是高考考查的重点.
The application of the function idea mainly manifests itself in the following aspects: firstly, it solves the related problems by virtue of the nature of the elementary function; secondly, transforms the studied questions through the function relation or the construction of intermediate functions; Closely related, the problem of equation can be solved by the method of function, on the contrary, the problem of function can be solved by the method of equation.The function and equation of thought provide the train of thought and method for solving the maths problem.