Southwest Jiaotong University
Electronic information
924 signal and system
Advantages of Southwest Jiaotong University:
Cost-effective 211 university
1 and 211 are well-known, and belong to the top 211
2. The test difficulty is moderate
. The signal and system of the preliminary examination of Southwest Jiaotong University. Compared with other schools, the signal is relatively simple to take the
digital-analog electrical, communication principles, and digital signal processing.
Why did I improve my education and find a better job after taking the postgraduate entrance examination
.
First choice of suitable majors and schools
learning is not selected, but spelled out. Review mathematics and English well before August. In this way, when choosing a school in September, there are many options available for selection
Professional course preparation suggestions
① Personal review experience
1. If you don’t understand the official textbook, you can first look at the real questions and find the key points from the real questions, and then read the book with questions and key points in the real questions
2. You must do the real questions well. Do the real questions at least three times, the better. You must understand the ideas of each question. After completing the real questions, sort out the questions of the same knowledge point and see how the same knowledge point is tested in different types of questions.
3. The undergraduate final exam paper is also important, and the importance is the same as the real exam. Some real exam questions may come from the original questions of the final exam paper or adapted
②Reference book list
" Signal and System " (SIGNALS & SYSTEMS) 2nd Edition (second Edition), translated by Liu Shutang (ALANV.OPPENHEIM)Xi'an Jiaotong University Press (/SBN7-5605-0970-3/TN.53)
▌ Mathematics
1. Layered review:
Mathematics is a key subject that determines whether you can get ashore during the postgraduate entrance examination. Especially Southwest Jiaotong University has a dual subject line of mathematics + English. For the review process of mathematics, it is recommended to review layer by layer. First, sort out the knowledge points that are often tested, and basically the knowledge points that are tested every year, such as in the answers: find the limit, find differential, find partial derivative, find the definite integral, find the extreme value, use of fixed integral, double integral , and differential equation . These questions are basically a must-take in every year, and it doesn't seem difficult, but in the exam, many students will lose points on these questions, resulting in the final math score being less than 100 and they missed the re-examination. In the early review, you must get all these questions, so that during the exam, you can basically ensure that the total score of mathematics is 100+.
2. Doing questions:
Early basic stage, while reviewing and doing the basic parts of the exercise set. After entering the intensive stage, it is recommended to do real questions for about 5-7 years first, feel how the real questions were tested, whether the review was consistent with the real questions, whether the focus of your attention is the focus of the real questions, and then check for omissions and fill in the gaps according to the real questions. The test points in the real questions are the focus of the annual examination and should be guided by the real questions. Many students think that it is enough to finish the exercise collection from scratch. First of all, many students don’t have time to finish a exercise book. Secondly, it’s not effective to do the advanced mathematics questions once. Generally, it’s only necessary to do three times, but it’s not enough time to do all the questions three times. So the feasible way is to choose quality questions and do them repeatedly, what are quality questions and questions that are similar to real questions.
For example, when the number two tests the calculation of determinant , the calculation of determinant , like to test abstract determinant calculations. Then when students with second numbers review the calculation of determinant, the calculation of abstract determinant should be higher than that of numeric determinant. I like to test numerical determinant calculations. For example, in , the linear equation system , the postgraduate entrance examination mainly focuses on calculation questions, and there are fewer choices for filling in the blanks. Then when reviewing, the priority of calculation questions for linear equation systems is higher than that for choosing filling in the blanks.
At the same time, in addition to the exercise set, you can also do the question pressing and sprinting papers produced by each teacher in the past two years. For example, students who take the postgraduate entrance examination in 23 can do it for 22 or 21 years, and each teacher will give out sprint papers and mark the papers.Generally speaking, the quality of the test papers in previous years is higher than the quality of the exercise sets produced by this teacher.
It is recommended to take your notes every two weeks, remember the formulas you should remember in advance, and review the questions you have done frequently. Mathematics questions generally need to be repeated three times before they are effective. Doing it once may just have a vague impression, but I still won’t see it again. The knowledge points and key topics must be repeated. For computing ability training, you can follow the three major computing courses of Teacher Yang Chao, which are publicly and free.
3. Computational ability training:
Postgraduate entrance examination mathematics has certain requirements for computing ability. You must master the four major calculations well, find the limit, find differential, find differential equations, and find integrals. You will find that in order to get the final result when answering questions, you often need to calculate an integral or differential equation. If the calculation ability is not up to standard, many questions can only be done half of them and cannot get full scores. If you can't calculate it wrongly, it is the hardest hit area for losing points every year. Many students will sigh after the exam, saying that I can do this question, but I can't calculate it. I'm sorry, I can't calculate the final answer, and the score will be greatly discounted.
4. Teacher:
I was with Teacher Yang Chao at that time. It was very good and very pragmatic.
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