Zhang Yu takes you to learn advanced mathematics, linear algebra, probability theory and mathematical statistics, 18 lectures on advanced mathematics, 9 lectures on linear algebra, 9 lectures on probability theory and mathematical statistics, complete answers to the real questions of Zhang Yu's postgraduate entrance examination mathematics, 1000 classic questions of Zhang Yu's postgraduate entrance examination.

Extension:

Brief introduction of Zhang Yu:

Zhang Yu, a math teacher who set sail for the postgraduate entrance examination, has been engaged in advanced mathematics teaching and postgraduate counseling for many years, and has published many papers in national core journals, one of which was selected for the "2007 Global Sustainable Development Conference".

Zhang Yu, Ph.D., is the author of Lecture on Advanced Mathematics for Postgraduate Entrance Examination 18 and Classic on the Origin of Mathematics for Postgraduate Entrance Examination 1000.

Evaluation of Zhang Yu's eight papers;

Volume 1: 124

Question 10 of multiple-choice question 6 is wrong. The weak link is the common surface equation and hypothesis test. It's strange that% did too few questions.

Fill in the blanks 14 15 is wrong. The weak link is that how the second kind of surface integral 9 is transformed into the first kind of surface integral is unfamiliar and the projection method is not skilled. The content of the base is relatively small, and I forgot.

The second question of the 20 th question of the big question will not, and the functional inequality will not take time to review. Wait until the previous routine questions are guaranteed not to lose points before attacking such questions.

Volume 2: 104

The inequalities of multiple-choice questions No.2, No.6, No.9 and 10 are wrong, and the weak link is that the abstract function "cannot be compared with counterexamples and can not be proved rigorously. Poisson distribution %prX=k, where k is an integer, an even number and an odd number. This is the first time I saw it, but I didn't expect to use the sequence problem.

Question 12 13 is wrong, and the weak link is multivariate function. Once the problem is innovated, it is not easy to get it right. The calculation ability of double integral 9 needs training and improvement. Question 20, question 2, no.

Volume 3: 136

There is nothing wrong with multiple-choice questions.

Fill in the blanks 12 16 is wrong, 12 is careless and the symbol is wrong. Question 16 won't. At that time, I didn't expect that it was wrong to use binomial distribution to "make big questions 2 1". I forgot that one of the conditions of similarity diagonalization% is that n eigenvectors corresponding to n eigenvalues are orthogonal to each other.

Volume 5: 1 15

Question 7 of the multiple-choice question is wrong, and the weak link is that the collocation method is not skilled.

Fill in the blanks 14 16 is wrong, and the calculation of 14 is wrong. The content convergence of probability in 16 has been unknown for a long time. 18 The second question is wrong. This scaling standard really doesn't work. Question 2 1 is wrong. The conversion between quadratic form and standard form is not skilled. Practice more!