Scholar's Cultivation System Panel

Chapter 86 I will personally give you a question

Xu Yun met the eyes of the students in the professional class below and walked to the podium, picked up the chalk and faced the blackboard to examine the questions.

"The matrix A is called a nilpotent matrix, if there are positive integers..."

"prove:"

"If A is a nilpotent matrix of order n, then for..."

-

As the topic caught his eye, he immediately understood that it was a matrix problem in linear algebra.

It can be seen that Tang Yanshan still took care of him when he came up with the question.

However, this belongs to the content of the following chapters. If other freshmen in the classroom were to answer this question, the final result would definitely be forced to give up.

He has already done hundreds of big questions in the past few days, and there are naturally similar question types among them.

So it's easy to answer.

With the blessing of abstract thinking and spatial thinking, after a little thought, an idea for solving the problem came to mind, and then I started writing on the blackboard to answer without any hesitation.Coupled with his powerful numerical calculation ability, he doesn't even need to make a draft to calculate, and others seem to be copying the answer.

Tang Yanshan watched Xu Yun's problem-solving process from the side of the podium, and his expression gradually changed into surprise.

In the end, he was even more shocked.

Use the algebraic method to solve the problem and determine that A must not be ranked.

n>r(A)≥r(A^)≥...r(A^n+1)≥0
Problem-solving ideas are okay.

The steps are also correct.

When Xu Yun wrote the last symbol, he finally couldn't help but stepped forward and asked, "Have you really taught yourself advanced algebra?"

"There are also mathematical analysis and analytic geometry." Xu Yun put down the chalk and answered truthfully.

When Tang Yanshan heard these words, his expression was dull and he didn't know what to say.After teaching at Jingzhou University for so many years, it was the first time I met such a worry-free student.

You have learned it before you teach it.

If it were someone else who told him that, he would definitely give him a severe reprimand and would not believe it.

But Xu Yun proved his level with practical actions.

But this is not a trivial matter after all, he hesitated for a while and asked again.

"The content of these three professional courses is quite a lot, and many knowledge points are relatively difficult. Can you tell me how you taught yourself?"

Of course, Xu Yun couldn’t say that he used the points, so he organized his language a little bit in his mind, and then he answered seriously: “I watched your open class on the school’s official website, maybe it’s because your explanation is easier to understand and I learned a lot. .”

Tang Yanshan couldn't hear the suspicion of flattery in these words, but he thought that Xu Yun taught himself mathematics and developed software, as if he had more time every day than others.

Don't you need to sleep at night?

In the end, out of concern, he gave an order.

"It is indeed a good thing to be willing to study more, but the body is the capital of everything, and you should pay more attention to rest."

"I know the professor." Xu Yun replied with a polite smile.

But before he could cheer up, Tang Yanshan's voice suddenly sounded next to his ears.

"I will personally give you the monthly exam next month to see how far you have learned."

Xu Yun's expression froze when he heard the words: "Professor Tang, there is no need to write a question."

"I think it's necessary." Tang Yanshan smiled, as if he liked seeing Xu Yun deflated.

But soon his expression calmed down, and he explained: "If you can get full marks in the monthly exam, I can let you attend lectures with sophomore students."

Xu Yun was a little moved.

If Tang Yanshan really wrote the questions himself, the difficulty of the test paper would undoubtedly rise to a very high level.

Maybe follow the sophomore class, so that he can get in touch with new content as soon as possible and end his undergraduate studies early.

Thinking about it like this really takes a lot of effort.

"Then I'll try my best."

Facing Tang Yanshan, he expressed his opinion, then turned around and walked to his seat in the audience.

Before his butt touched the stool, Qian Yudong's thumb was already raised.

"Bull, Xu Yun."

"You actually finished learning Gao Dai without making a sound. I thought you were going to make a fool of yourself just now."

"Brother Yun, are you planning to complete the credits of professional courses in advance?" Zhao Yuefeng asked after taking Qian Yudong's words.

You can see the admiration in his eyes.

"Maybe." Xu Yun gave an uncertain answer.

At first, he had no idea of ​​graduating early, after all, the ultimate goal he pursued was all kinds of truth.

There is no need to enter the society to find a job.

Since I finished my freshman mathematics course ahead of schedule because of the task, it's okay to speed up the progress.

If you become a graduate student early, you will also have the opportunity to get in touch with national-level projects.

This is much better than writing a thesis.

"It's definitely better to finish the credits earlier than later." After listening to everyone's conversation, Zhou Qi first expressed his affirmation to Xu Yun's choice, and then asked a little embarrassedly: "That Xu Yun, the self-study method you mentioned Is it really useful?"

As soon as this word comes out.

Immediately, it was like a cat seeing fishy, ​​and all the people who were diving and eavesdropping were blown out.

"I also want to teach myself Gao Dai."

"Gao Dai is really too difficult, just listening in class is not enough."

"Please share!"

"Hold Xu Shen's thigh tightly, can I ask you questions in the future?"

Feeling the enthusiasm of the classmates who surrounded him, Xu Yun saw that Tang Yanshan was ready to start class on the podium, so he quickly opened his mouth to answer to temporarily quell the upsurge.

"No problem, I'll post the link to the group later."

With Tang Yanshan's affirmation, Xu Yun was more free to do whatever he wanted in the second class.

Continue to brush your own problem sets.

……

University life is no different from high school in some respects, it is also very regular and tense.

In particular, we have to deal with monthly exams and final exams.

In high school, the teacher’s favorite saying is that after working hard to get into college, it will be easy. In fact, after entering college, I realized that this is purely a lie.

It's not impossible to want to relax, provided that you don't care about failing subjects.

Can't even graduate.

Compared with other people, Xu Yun's life is undoubtedly more regular.

After Mathematical Analysis class on Wednesday afternoon, Xu Yun and his roommates had dinner in the campus restaurant and did not return to the dormitory.

Straight into the school library.

After these few days of hard work, he is only a few dozen questions away from completing the self-disciplined learning master's advanced task. Facing this last step, he will definitely shoot it in today.So he decided to complete these questions in the library, a scene with a great learning atmosphere, and get the task rewards first.

When my spatial thinking ability is doubled again, I will be more confident in facing the monthly exam.

Who told Tang Yanshan that the monthly exam would be given to him personally.

"As expected of the library of a key university, there will be no shortage of people at any time."

Re-entering the library with his student card, Xu Yun had no sense of the crowd in front of him.

With a sigh in my heart, I looked around and searched for empty seats in the self-study area.

Speaking of which, he hasn't been to the library for a few days. Except for going to the study room at night, he usually stays in the dormitory after class.

After all, it is convenient to watch the public class videos on the school's official website, which can help him learn faster.

Just as he was walking around the self-study area, he suddenly caught sight of two familiar figures out of the corner of his eye, and he hesitated for a while before moving over.

The body stopped by the self-study table, carefully opened the chair and sat in the empty seat next to Yao Leyi, and softly greeted Chen Shihe who was opposite.

"Sister Shihe."

Since the last time I met Chen Shihe and her roommate Yao Leyi in the information common space of the library.

After these days.

Happened again today by chance.

However, judging from the situation of the two of them today, they obviously didn't make an appointment for an advanced area like the information sharing space.

"Class has started, how do you feel now?"

Hearing the sound, Chen Shihe raised her beautiful eyes, saw that it was Xu Yun who was sitting down, and finally smiled and said a word of concern.

Today, Chen Shihe's dress is more casual. It looks like she went out without makeup, but it doesn't affect her appearance at all. On the contrary, the smile on her face becomes a bonus.

"Every day is quite fulfilling." Xu Yun said lightly after recovering.

What he said was not wrong at all. Since the end of the military training, he officially began to attend classes according to the curriculum schedule. Every day he was either reading various mathematics textbooks or studying problem sets.

You can learn more in two weeks than in one semester.

No one would believe it if it wasn't substantial.

While the two were chatting briefly, Yao Leyi next to her became upset, stopped writing and poked Xu Yun and said, "I said junior, can you not only have your sister Shihe in your eyes, I am such a college sister sitting here Didn't you see it?" He said without forgetting to puff out his chest.

Xu Yun turned his head and looked at Yao Leyi like a gentleman, and hurriedly added a greeting.

"That senior sister is good."

The expression on his face was somewhat dumbfounding.

Fortunately, Yao Leyi didn't intend to continue to tease Xu Yun, she nodded in satisfaction when she heard this sentence, and continued to lean over and continue to talk about her high math problem.

Xu Yun glanced at it and noticed that Yao Leyi was doing the analysis of the [-] postgraduate entrance examination questions.

It can be seen that it is really hard for the postgraduate entrance examination.

Soon he was also immersed in his own set of exercises. As the pen tip quickly slid across the draft, the progress of the task continued to increase at a speed visible to the naked eye.

I don't know how long it has passed, but just as he was about to successfully complete the task, Yao Leyi's actions beside him caught his attention.

"Shihe."

"Please tell me about this question. I just read the answer and I still don't quite understand it."

Raising her gaze, she saw Yao Leyi running to Chen Shihe's side at some point, holding a draft in her hand and asking questions.

"Let me see."

Chen Shihe's grades in high mathematics were better than Yao Leyi's, so he decisively took the draft and looked at the big questions copied from it.

But for some reason, Chen Shihe still couldn't calculate the correct answer after a few minutes, frowning tightly as if it was very difficult.

"The result and answer I calculated are wrong, which step should be wrong."

"fine."

Yao Leyi didn't care about the result. Before leaving, she picked up the draft and comforted Chen Shihe: "I'll ask a senior graduate student when I get back."

It stands to reason that Xu Yun doesn't need to intervene in this situation, but if he chooses to ignore it when he has the ability, it seems that he is not enough friends.

Anyway, for him, anyone's problem is to do.

When the thinking came to this point, he immediately asked tentatively, "Can I see that?"

　Thanks for the reward of 100 points in Kunlin Yuanshan, thank you for the reward of 100 points that have not been thought of yet!

　　
　
(End of this chapter)