"This problem can be solved by Jacobian iterative method, which converts the system of equations from the form of Ax=b to the form of X=Bx+g, and then iteratively solves iteratively."

September 27, 2015, Kyonju University, Dormitory Room 205, Biyun 2, Male Dormitory Building.

In the morning, Xu Yun sat at the desk under his bed, holding the pen in his right hand and explaining while performing calculations in the draft book.

In a short time, the complete solution process of solving the problem of solving the system of linear equations was completed.

While stopping writing, he raised his gaze and looked at Zhou Qi beside him: "This type of question should not be too difficult for you." ”

"Who made it easier for you to understand?"

Zhou Qi smiled and took the draft book from Xu Yun's hand, and did not forget to thank him when he turned around and returned to his desk.

"Thank you."

Today is the Mid-Autumn Festival.

Zhao Yuefeng bought a ticket in advance, and yesterday he had left school to go home, and the head of the dormitory, Qian Yudong, went to participate in club activities.

The two of them were the only ones left in the dormitory to study separately.

Originally, they planned to go to the library, but they were told by the school that the library would be closed for a day.

I had 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 it is not sent back for revision, I believe it will not be long before it will be accepted for publication.

After giving Zhou Qi the question, he lowered his gaze again and focused on the two English textbooks on the desktop.

"Sentence by sentence of Level 4 past questions"

Level 4 Vocabulary Flashes

Based on the cover color, he refers to it as a blue-gold partner.

He went to the store yesterday to buy it.

In order for college students to successfully graduate from the bachelor's degree, it is necessary to pass the English test level 4.

Since he is planning to complete his credits in advance, it is undoubtedly the most suitable for him to take the Level 4 exam in December this year.

There are still two months left, just to make up for this shortcoming.

Anyway, he doesn't have the pressure to work on the task now.

In mathematics, when the monthly exam is over, with Tang Yanshan's permission, he can directly follow the sophomore students to take professional courses.

"With my current ability to remember, I only need to memorize a lot of words, and there should be no problem in coping with the Level 4 English exam at the end of the year." Xu Yun planned the learning strategy in his mind, determined that the plan was feasible, and immediately took the lead in flipping through the fourth-level vocabulary.

I remember when I first entered high school, memorizing English words was the most nightmare I I felt.

Sleep on your back today, forget it all tomorrow.

As powerless as you want.

The key is that he doesn't have a bad memory, and he doesn't have any problems memorizing poems and mathematical formulas.

Only English is holding back.

If it weren't for the ability to concentrate, he would have been able to forcibly immerse himself in English revision to improve his grades, but he was afraid that his college entrance examination score would have been reduced.

But that's the end of that today.

Relying on his ability to remember, he can keep in his mind no matter how many words there are.

It's no problem to say that it's humanoid translation software, but it's not easy to take a level 4 exam.

After Xu Yun quickly immersed himself in this vocabulary book, his reading speed was not slow, and if he continued at this efficiency, he believed that he would be able to read the entire vocabulary book before noon, and it was still the kind of level that he couldn't forget in his mind.

Just as he finished reading the content of the current page, he was about to reach out and turn the page when his eyes were suddenly occupied by the emerging panel.

The task level 2 page is displayed.

——

Mission: Hexagonal Warrior

Requirements: Make up for your shortcomings, become a hexagonal warrior, learn English for at least three hours a day, and check in for a total of 30 days.

Progress: 0/30

Bonus: 50 points. Ability - Oral proficiency (20% increase.) ）

——

Advanced Mission: Pass the CET-4 exam and the task reward will be doubled.

"Huh~"

"It's actually a task."

Xu Yun temporarily moved his gaze to the panel, and after reading the information displayed on it, a slightly surprised look appeared on his face.

Because since he used his brain overclock to master the content of the freshman math major course, no matter how much he looked at the textbook, he could not generate a new task.

For this reason, when he bought these two English textbooks yesterday, he also wondered if the new subject would generate tasks.

I didn't expect it to be in a word.

And in addition to normal tasks, advanced missions are also derived.

According to the task, he had to study English for at least three hours a day and accumulate 30 days to complete it.

But fortunately, it wasn't 30 days in a row, and it was easier to do.

In addition, he was also interested in the oral proficiency of this award, which at least improved his English speaking skills.

As a person who grew up in a small place in Yuanshan County, Pingzhou City, he still speaks with some accents.

This accent can be ignored when speaking Mandarin, but if you speak English or even talk to others, I am afraid that even he will be embarrassed to laugh.

Because of this, many people have difficulty communicating in English even though they have a very good score in English.

But having this oral proficiency is different, at least in the future, you can easily talk with foreign experts and professors.

As for the later price purchase task, it is not very difficult, it is nothing more than to participate in the fourth-level exam at the end of the year.

There was such a small episode, just as he was about to continue learning English and strive to check in today, a message prompt suddenly came from the mobile phone next to the desk.

Subconsciously moved his gaze towards the screen, and the expression on his face changed slightly.

"Do you want me to eat at home?"

The content of the information is whispered in the mouth, and the brain thinks quickly.

The message was sent by Chen Shihe, because today is the Mid-Autumn Festival, and Chen Jianyi wants him to come over to the house for a simple dinner.

It's human nature.

There really is no reason to refuse.

Immediately replied with a message saying that he would arrive on time, and he threw himself into English again.

It wasn't until the end of the three hours, when the progress of the task had successfully changed from zero to one, that he temporarily stopped and stretched comfortably.

Then he turned to Zhou Qi and said, "In the evening, an uncle in Jingzhou asked me to go to his house for dinner, and I guess I won't go back to the dormitory to rest." ”

"It's the guy who brought you clothes last time, okay." Zhou Qi didn't think much about it when he heard this, and nodded lightly to indicate that he knew.

……

Five o'clock in the afternoon.

Xu Yun took the subway from school to Chen Shihe's house.

When he first arrived in Jingzhou City, Chen Jianfang took him here, and it didn't take long for him to reach the downstairs of the community with his memory.

Looking up, there is a large flat floor of a bungalow.

Just as he was about to pass, a familiar figure suddenly appeared in his sight.

Today, Chen Shihe was wearing an elegant white lounge suit, with pink slippers on his feet, judging from his completely plain makeup and slightly messy hair, he should have been dragged up before he woke up.

When he saw this scene, he hurriedly greeted him: "Sister Shihe, why did you come out?" ”

"It's not Lao Chen who asked me to pick you up." Chen Shihe glanced at Xu Yun and complained about Chen Jianfang without any concern, but after saying this, he didn't forget to care: "By the way, have you called your aunt?" ”

"It's already been beaten." Xu Yun nodded and replied.

In fact, he originally planned to go home like Zhao Yuefeng, but after calling his mother, he was stopped.

After all, it's only been a month since school started.

So he thought about waiting for the winter break to go back.

Immediately followed Chen Shihe into the house, at first glance he saw Chen Jianfang in an apron busy in the kitchen, obviously today Chen Jianfang, a chef-turned-hotel owner, is planning to cook in person, this time he came over to be blessed.

"Hello Uncle Chen."

He put the fruit basket he brought on the table and walked over to say hello to Chen Jianfang.

"You and Xiao He sit first, and the meal will be fine." Chen Jianfang stared at the pot and didn't look back, and explained casually.

Then Chen Shihe's mother Zhang Wenyan came out of the room, and when she saw this, Xu Yun also hurriedly said hello.

That's it.

After waiting for about half an hour, the food was finally out of the pot.

Several people put their plates on the table, and it seemed that it could only be described as rich.

Not at all inferior to the banquet of the Grand Hotel.

After all, it was not the first time they had a meal, and the atmosphere between the meals was quite harmonious.

In addition to Chen Jianfang asking him a few words about his situation at school, the right to speak ran into Zhang Wenyan's hands.

However, the object of her speech is basically Chen Shihe.

"I said Xiaohe, do you really have to go to graduate school, it's not good to graduate early and help your dad manage the hotel?"

"Mom, don't worry about it, I have my own plans." Chen Shihe didn't seem to hear much of the nagging, and his expression was a little impatient when he answered.

"I have to come out to work sooner or later, why delay that time." Zhang Wenyan still couldn't help but answer.

As soon as the words of the front foot fell, he suddenly turned his head to look at Xu Yun in the next second.

"And Xiao Yun too, if you apply for any unpopular mathematics department, it will be more troublesome to find a job in the future."

Xu Yun was eating spicy shrimp, and suddenly heard the topic on him, his expression froze, although he knew that the other party was really thinking about him, but he didn't know how to respond for a while. Just as he was about to organize the language, Chen Shihe's voice suddenly came from his ears: "Mom, what do you know, Xu Yun is very talented in mathematics, and he has every chance to stay in school and become a professor." ”

Chen Jianfang saw that the atmosphere was a little sharp, so he had no choice but to make a round.

"Everybody eats."

"Don't mention these things today, the children have grown up and have their own ideas, and it's good to be able to do what they like."

"How about a taste of this fish."

……

After eating, Xu Yun did not stay at Chen Jianfang's house, but chose to take the subway back to the rental house.

As time passed, it soon came to the National Day.

In the past few days, the progress of his hexagonal warrior mission has been steadily increasing.

In addition to memorizing words and brushing past questions and talking about high generations for Zhou Qi, he occasionally answers some questions in Yao Leyi's group, and in general, every day of the holiday is very fulfilling.

However, Qian Yudong didn't see anyone all day, and he didn't know how many club activities he had participated in.

It is worth mentioning that Xu Yun did not stay in the school dormitory on the National Day, but came to the office space of Xinmaocheng Company.

Today, in addition to the official delivery of the portrait beautification model and the opening of entertainment, dance and music divisions for Huya Live, Meng Songyan also mentioned a new project.

With these two things, he must go over to take a look, and by the way, comfort the company's employees who are still working on holidays.

(End of chapter)