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本章的主要内容是函数及其表示法、二次函数、一元一次不等式组和绝对值不等式、一元二次不等式、函数的单调性和奇偶性、反函数等. 这部分内容主要是初中函数及其图象一章内容的复习和提高.考虑到学员们对这部分内容已有遗忘或没有系统学习,因此本章以复习初中这部分内容为主,在集合概念的基础上加深对函数概念的理解,并重点讨论了二次函数,有了一次函数、二次函数、反比例函数等基础知识,给出函数的单调性、奇偶性、反函数等概念:不等式的内容也是代数的重点内容之一,求函数定义域等常常需
The main contents of this chapter are functions and their representations, quadratic functions, unary inequalities and absolute value inequalities, unary quadratic inequalities, monotonicity and parity of functions, inverse functions, etc. This part is mainly about junior high school functions and their functions. The review and improvement of the contents of the chapter of the image. Considering that the students have forgotten or have not systematically studied this part of the content, this chapter focuses on the review of this part of the junior high school and deepens the understanding of the concept of function based on the concept of collection. It also discusses the quadratic functions and has the basic knowledge of the functions such as primary functions, quadratic functions and inverse proportional functions. It gives the concepts of monotonicity, parity and inverse function of the function: the content of inequalities is also one of the important contents of algebra. Function definition domain, etc. often need