Substitution method: that is, substitute a specific number for an alternative answer, and if it conflicts with the hypothetical conditions or well-known facts, it will be rejected. The algorithm is suitable for the trunk of the problem, and the given condition is analytical.
The graphic method is suitable for the case that the given function has certain characteristics in the stem, such as parity, periodicity or that the given event is two events, and it is particularly simple to do it with the graphic method. Exclusion method: exclude three, and the fourth is the correct answer. This method is suitable for the case that the given function in the stem is an abstract function.
Matters needing attention in postgraduate mathematics
Mathematics for postgraduate entrance examination, as an examination subject, needs to complete the answering task within the specified time, so the answering speed is still very important. A lot of postgraduate experience shows that from July to September, you will start to ask the sea tactics and do the questions repeatedly. Under the requirement of speed, doing more questions will really improve the feeling of doing them. Remind research friends to learn to summarize when doing problems, and suggest preparing a set of self-examination of wrong problems.
Examination outline is not only the rule that proposers should follow, but also the basis for our review. Mathematics test questions are different from political test questions, which have continuity and stability. Careful students may have noticed that the outlines of different knowledge points have different requirements, such as understanding, comprehension, mastery and calculation.