I. Function, Limit and Continuity The focus of this chapter is mainly the calculation of limit. There are many types of limits, and you need to calculate the results in different ways. This requires you to practice more and be familiar with all kinds of limits. As for the concepts of "function" and "continuity", there should be no problem.
Secondly, this part of unary differential focuses on the calculation of derivative, and the calculation of maximum and minimum. In this respect, there are often some application problems for you to find the maximum value, as well as the solution of compound derivatives, which are easy to make mistakes and need to do more exercises.
3. One-dimensional integration This part focuses on calculating the integrals of various functions, such as rational functions, irrational functions, trigonometric functions, inverse trigonometric functions and so on. We still need to do exercises.
Fourth, the differential equations may be relatively simple, mainly because we are familiar with those formulas, so we must remember that it is very easy to apply them directly when doing problems.
5. Spatial analytic geometry This part mainly remembers some equations of spatial geometry, such as paraboloid, ellipsoid, cone and saddle surface. This part of knowledge is mainly used in the later surface integration.
6. Multivariate differential is actually a generalization of univariate differential. The former one has a solid study, and this one won't be too big a problem. The types of questions are similar to unitary questions, so we should learn unitary questions well.
Seven, multivariate integral, this part has some similarities with one-dimensional integral, but it is also different from one-dimensional integral, such as curve integral and surface integral. This part is the difficulty and key point of multivariate integral. There will be one or two questions in this aspect in the exam, so you must do more exercises and be familiar with various types of integral, including Green's formula, Gauss formula and Stokes formula. There are many kinds, so don't confuse them.
Eight, this part of infinite series is not very difficult, provided that you remember all kinds of discriminant methods, such as limit discriminant method, comparative discriminant method, Cauchy discriminant method and so on. The problem can be remembered, but it is not easy to remember.
Math 3 should be easy. You'd better do some real questions for the postgraduate entrance examination over the years and be familiar with the questions.