"This problem can be solved using the Jacobi iteration method. Convert the system of equations from the form of Ax=b to the form of X=Bx+g, and then solve it iteratively."
September 27, 2015, Jingzhou University, dormitory 205, Biyun 2, male dormitory building.
In the morning, Xu Yun sat at the desk under his bed, holding a pen in his right hand and doing calculations on the draft book while explaining.
Soon I finished writing the complete solution process for this big problem of solving a system of linear equations.
While he stopped writing, he raised his gaze and looked at Zhou Qi beside him: "This type of question shouldn't be too difficult for you."
"Who made it easier to understand what you said."
Zhou Qi took the draft from Xu Yun with a smile, and did not forget to thank him when he turned back to his desk.
"Thanks."
Today is the Mid-Autumn Festival.
Zhao Yuefeng bought his ticket in advance and left school to go home yesterday. The dormitory principal Qian Yudong went to participate in club activities.
Only the two of them were left studying alone in the dormitory.
Originally, their plan was to go to the library, but the school informed them that the library would be closed for the day.
I have no choice but to stay in the dormitory.
It is worth mentioning that the status of his paper has changed, and the new letters displayed on the page indicate that the paper is in the hands of the editor.
If you don't get called back for revision, I believe it won't be long before it is accepted for publication.
After explaining the question to Zhou Qi, he lowered his eyes again and focused on the two English textbooks on the table.
"Sentence-by-Sentence Explanation of Level 4 Real Questions"
"Level 4 Vocabulary Flash"
He called it the blue-and-gold pairing, based on the color of the cover.
He went to the store to buy it yesterday.
In order for college students to successfully graduate from their undergraduate degree, they must pass the CET-4.
Since he is ready to complete his credits in advance, it is undoubtedly most appropriate to take the CET-4 exam in December this year.
Taking advantage of the fact that there are still two months left, I can just make up for this shortcoming of my own.
Anyway, he no longer has the pressure of tasks.
In terms of mathematics, after the monthly exam is over, and with Tang Yanshan's permission, he can just take professional courses directly with the sophomore students.
"With my current photographic memory ability, I only need to study a lot of real questions and memorize the words, and I should have no problem coping with the CET-4 English test at the end of the year." Xu Yun planned the study strategy in his mind, and immediately started reading it after confirming that the plan was feasible. That fourth-level vocabulary book.
I remember that when he first entered high school, memorizing English words was his most nightmare.
If you memorize it today, sleep and forget about it tomorrow.
The more powerless you want, the more powerless you will be.
The key is that his memory is not bad, he has no problem memorizing poems and mathematical formulas.
Only English is holding back.
If he hadn't gained the ability to focus, he could forcefully immerse himself in English review to improve his grades, but his college entrance examination scores would have been even lower.
However, this situation has completely ended today.
Relying on his photographic memory, no matter how many words he has, he can remember them firmly in his mind.
It's okay to say it's a humanoid translation software, but it's not easy to pass CET-4.
After Xu Yun quickly immersed himself in this vocabulary book, his flipping speed was not slow. If he continued at this efficiency, he believed that he would be able to read the entire vocabulary book before noon, and still remember it in his mind. To the extent that I can't forget it even if I want to.
Just when he had finished reading the content of the current page and was about to reach out to turn the page, his eyes were suddenly occupied by the emerging panel.
The task secondary page is displayed above.
——
Mission: Hexagon Warrior
Requirements: Make up for your shortcomings, become a hexagon warrior, study English for at least three hours a day, and clock in for a total of thirty days.
Progress: 0/30
Reward: 50 points. Ability-Spoken Language Proficiency (increased by 20%.)
——
Advanced tasks: If you pass the CET-4 test, the task rewards will be doubled.
"Eh~"
"It actually generated a mission."
Xu Yun temporarily moved his eyes to the panel. After reading the information displayed on it, there was a look of surprise on his face.
Because since he used his brain to overclock to master the content of the mathematics course in his freshman year, no matter how many times he read the textbooks and solved the questions, he could not generate new tasks.
For this reason, when he bought these two English textbooks yesterday, he was still thinking about whether changing to a new subject would generate tasks.
Unexpectedly, I hit the nail on the head.
In addition to ordinary tasks, there are also advanced tasks.
According to the task requirements, he had to study English for at least three hours a day and it took thirty days to successfully complete it.
But fortunately, it’s not just thirty days in a row, so it’s easy to do.
In addition, he is also very interested in the oral proficiency of this award, which can at least enhance his English speaking level.
As someone who grew up in a small place in Yuanshan County, Pingzhou City, he still speaks with an accent.
This accent can be ignored when speaking Mandarin, but if he speaks English or even converses with others, he may not be able to hold back his laughter and feel embarrassed.
Because of this, although many people have very good English scores, they find it difficult to communicate in English normally.
But having this oral proficiency is different. At least in the future, I can talk openly and easily with foreign experts and professors.
As for the subsequent price purchase task, it is not that difficult. It is nothing more than taking the Level 4 exam at the end of the year.
There was such an episode. Just when he was about to continue learning English and try to clock in today, a message notification sound suddenly came from the mobile phone next to the table.
Subconsciously, he moved his gaze towards the screen, and the expression on his face changed slightly.
"Want me to come home for dinner?"
He muttered the information in his mouth, and his brain started thinking quickly.
The message was sent by Chen Shihe. Because today is the Mid-Autumn Festival, Chen Jiancong wanted him to come over to his house for a simple dinner.
This is human nature.
There is really no reason to refuse.
I immediately replied to a message saying that I would arrive on time, and then I concentrated on English again.
It wasn't until the three hours were over and the mission progress successfully changed from zero to one that he temporarily stopped and stretched comfortably.
Then he turned around and said to Zhou Qi: "An uncle of mine in Jingzhou asked me to go to his house for dinner tonight. I probably won't go back to the dormitory to rest."
"It must be the person who gave you clothes last time, okay." Zhou Qi didn't think much after hearing this, and nodded lightly to show that he knew.
…
Five p.m.
Xu Yun took the subway from school to Chen Shihe's home.
When he first arrived in Jingzhou City, Chen Jianfang took him there, and he quickly reached the downstairs of the community by relying on his memory.
Looking up, I saw a large bungalow with one floor.
Just as he was about to go over, a familiar figure suddenly appeared in his sight.
Today, Chen Shihe was wearing an elegant white housecoat with pink slippers on her feet. Judging from her completely bare makeup and slightly messy hair, she must have been dragged up without waking up.
When he saw this scene, he hurriedly went up to say hello: "Sister Shihe, why did you come out?"
"Old Chen asked me to pick you up." Chen Shihe glanced at Xu Yun and complained about Chen Jianfang without caring, but after saying this, he did not forget to show concern: "By the way, have you called your aunt?"
"Already fought." Xu Yun nodded and replied.
In fact, he originally planned to go home like Zhao Yuefeng, but he was stopped after calling his mother.
After all, it’s only been a month since school started.
So he thought about going back during the winter vacation.
Immediately, he followed Chen Shihe into the house. At first glance, he saw Chen Jianfang, who was busy in the kitchen wearing an apron. It was obvious that Chen Jianfang, a hotel owner with a background as a chef, planned to cook in person today, so he was in for a treat this time.
"Hello, Uncle Chen."
He put the fruit basket he brought on the table and walked over to say hello to Chen Jianfang.
"You and Xiaohe sit down first, the food will be ready later." Chen Jianfang said casually while staring at the pot without looking back.
Then Chen Shihe's mother Zhang Wenyan came out of the room, and when she saw Xu Yun, she quickly said hello.
that's all.
After waiting for about half an hour, the food was finally ready.
Several people placed plates on the table, and it looked sumptuous.
It's not inferior to a banquet in a big hotel.
After all, this was not their first time having dinner together, and the atmosphere during the meal was quite harmonious.
Except for Chen Jianfang asking him a few questions about his situation at school, the right to speak went to Zhang Wenyan.
But the person she was talking about was basically Chen Shihe.
"Xiao He, do you really want to take the postgraduate entrance examination? Why don't you graduate early and help your dad manage the hotel?"
"Mom, just leave it alone, I have my own plans." Chen Shihe seemed to have heard the nagging frequently, and his expression was a little impatient when he answered.
"You have to go out to work sooner or later, why waste your time?" Zhang Wenyan couldn't help but added.
As soon as he finished speaking, he suddenly turned his head to look at Xu Yun the next second.
"The same goes for Xiao Yun. If you apply for an unpopular mathematics department, it will be more troublesome to find a job in the future."
Xu Yun was eating spicy shrimps when he suddenly heard the topic was brought up about him and his expression suddenly froze. Although he knew that the other party was really thinking about him, he didn't know how to respond. Just as he was about to organize his words, Chen Shihe's voice suddenly came to his ears: "Mom, what do you know? Xu Yun is very talented in mathematics and has every chance of staying in school and becoming a professor."
Chen Jianfang saw that the atmosphere was a bit harsh, so he had no choice but to smooth things over aloud.
"Let's all eat."
"Don't mention these things today. The children have grown up and have their own ideas. It's good to be able to do what they like."
"How about you try this fish?"
…
After dinner, Xu Yun did not stay at Chen Jianfang's house, but chose to take the subway back to the rental house.
As time passed by, the National Day soon came.
The progress of his Hexagon Warrior mission has been steadily increasing in the past few days.
In addition to memorizing vocabulary words to practice real exam questions and giving lectures on advanced topics for Zhou Qi, I occasionally answered questions in Yao Leyi's group. Overall, I had a very fulfilling holiday every day.
On the other hand, Qian Yudong didn't see anyone all day long, and he didn't know how many club activities he participated in.
It is worth mentioning that on National Day, Xu Yun did not stay in the school dormitory, but came to the Xinmaocheng company office space.
Today is not only the official delivery of the portrait beautification model and the day that Huya Live Broadcast will open entertainment, dance and music sections, Meng Songyan also mentioned a new project.
With these two things happening, he would definitely go over and take a look, and express his condolences to the company employees who were still working during the holidays.
(End of chapter)
