This is the same as many students feel. You can get the problem at first sight, which is familiar and simple, but it is not as easy to do as you think. Perhaps it is because of the mathematics reform of the postgraduate entrance examination in 20021that the proposition teacher considers making as many students as possible familiar with and adapt to the reformed topics and questions, so the difficulty is slightly reduced.
In addition, it may also be a signal that mathematics will pay more attention to the examination of basic knowledge in the future. Students who take the postgraduate entrance examination should not only pay attention to various methods and skills, but also pay attention to basic knowledge when preparing for mathematics. After the exam every year, some students will find it difficult, while others will find it not so difficult.
Postgraduate entrance examination mathematics examination requirements
1. Understand the concept of function, master the representation method of function, establish the function relation of application problem, understand the boundedness, monotonicity, periodicity and parity of function, understand the concepts of composite function and piecewise function, understand the concepts of inverse function and implicit function, master the properties and graphics of basic elementary function, and understand the concept of elementary function.
2. Understand the concept of limit, the concepts of left limit and right limit of function, the relationship between the existence of function limit and left limit and right limit, master the nature of limit and four algorithms, master two criteria for the existence of limit, and use them to find the limit, and master the method of finding the limit by using two important limits.
3. Understand the concepts of infinitesimal and infinitesimal, master the comparison method of infinitesimal, find the limit with equivalent infinitesimal, understand the concept of function continuity (including left continuity and right continuity), distinguish the types of function discontinuity, understand the properties of continuous function and the continuity of elementary function 1, understand the properties of continuous function on closed interval, and apply these properties.