Chen Zhou returned to his seat and found that Yang Yiyi was looking at the textbooks attentively, but did not realize that he had returned.

Chen Zhou looked at the time and it was already 3:28 pm.

They stayed in the library for nearly two and a half hours.

Chen Zhou looked at Yang Yiyi again, then raised his head and took a sip of the psychotropic substance, and devoted himself to the study of complex function again.

This time no one disturbed me, Chen Zhou was eagerly learning the contents of the textbooks.

After solving all the questions in Exercise 2 of Chapter 2, Chen Zhou closed the textbook.

Through this period of use of psychotropic agents, he found that he had been studying in immersion mode for a longer time.

Even if the mental potion is over, he is still immersed in the book.

Chen Zhou guessed that it was the bonus of psychotropic agents to active learning habits. Perhaps one day he could get rid of psychotropic agents and achieve that immersion mode based on his own learning habits alone.

Chen Zhou turned his head and looked at Yang Yiyi beside him. This girl was still focusing on the number textbook.

He poked Yang Yiyi with his hand, and Yang Yiyi turned her head blankly.

"Are you hungry?" Chen Zhou said softly.

"Ah?" Yang Yiyi didn't react for a moment.

Chen Zhou pointed to his watch, and Yang Yiyi noticed that it was almost 6 o'clock.

"Um~" Yang Yiyi stretched, then stood up and said, "Let's go."

She found that Chen Zhou was not moving, and looked at Chen Zhou strangely and found that Chen Zhou was actually blushing.

Yang Yiyi remembered that she stretched her body and her whole clothes were tightened. What did this guy see?!

A hint of blush suddenly climbed on her face, and she patted Chen Zhou hard: "What are you... thinking about?!"

Chen Zhou touched his nose awkwardly, got up and took Yang Yiyi's hand, and left the library.

On the way to the cafeteria, Yang Yiyi remembered what happened in the afternoon and asked, "Chen Zhou, is there anything you need to ask you for? "

Chen Zhou replied: "Professor Wu asked me why I was looking at the complex variable function, and if I had finished the number division, I told the truth. Then, Professor Wu invited me to join their research group with great enthusiasm. Professor Wu also

I praised me for having a strong learning ability, but I couldn’t refuse, so I could only join them.”

"Just blow, I don't believe it." Yang Yiyi said with a smile.

"Hehe. OK, it's actually..." Chen Zhou told Yang Yiyi the actual situation.

After listening to Chen Zhou's words, Yang Yiyi was happy for Chen Zhou, but she still said, "It is a good thing to be able to join the research project in her freshman year. Just help the two professors."

"Well, I think so too." Chen Zhou nodded and said, "It should be a very simple topic to let me join, but it is a good thing to be able to get exercise."

"Yeah." Yang Yiyi agreed with Chen Zhou's idea and also recognized Chen Zhou's current mentality.

After Chen Zhou experienced that psychological distress of chemical organisms, his mentality became more and more stable.

After the meal, the two walked to the lakeside of Yanda holding hands, which made the breeze blow on their faces, and the early summer was cool.

Yanda Lake is a famous attraction in Yandading.

Chen Zhou looked at Yang Yiyi, remembered the girl's appearance of stretching, and said softly: "Yiyi, you look so beautiful..."

However, Yang Yiyi didn't hear it. She was staring at the waves reflected by the lights on the lake in a daze.

Chen Zhou and Yang Yiyi enjoyed the lake view for a while, then walked towards the library and continued to write books.

It was not until the closing time that Chen Zhou and Yang Yiyi came out of the library.

"Yiyi, tomorrow will be the 65th anniversary of the National Day, let's go to see the military parade?" Chen Zhou suggested on the way back to the dormitory.

"Okay." Yang Yiyi agreed happily. After thinking about it, she asked again, "Why didn't uncles and aunts come here to play during the National Day?"

Chen Zhou said: "Originally, there was a military parade on National Day this year, so I also wanted them to come and have a look at the military parade. But I said it several times, and both of them said that the family was busy and they didn't want to come. Well, wait for the next time

Have a chance."

"That's a pity. The military parade only takes once every five years." Yang Yiyi said regretfully.

"Then, will your mother come here?" Chen Zhou remembered the woman who smiled at him at the West Wan Station.

Yang Yiyi: "She doesn't have time, either."

Chen Zhou: "Then let's take more videos."

Yang Yiyi said disgusted: "Hey, your photography skills are all blurry when shooting fireworks."

Chen Zhou: "You are talking nonsense, that's obviously a vague effect..."

Yang Yiyi: "..."

Chen Zhou sent Yang Yiyi downstairs to the dormitory: "Go to bed early at night and see you tomorrow morning."

"Well, so are you." Yang Yiyi thought of something and added, "Don't stay up late to read."

"Okay, I understand." Chen Zhou waved his hand and turned to walk towards his dormitory.

It is impossible not to stay up late. Haven’t you seen Li Li still writing hard?

If you don’t stay up late, how can you make up for the time you have played?

Chen Zhou returned to the dormitory, took out the textbook of the complex function from his backpack, and prepared to continue to write the book.

He had already seen the middle of Chapter 3, and he worked harder and it would be no problem to finish all within three days.

He raised his head and took a sip of the psychotropic agent.

Chen Zhou opened this yellow-skinned textbook and quickly immersed in it.

Although the textbook for complex variable functions is not much, it is relatively difficult.

Through this period of self-study, Chen Zhou felt fortunate that he chose to study in advanced mathematics for the first task after the system was activated.

Although advanced mathematics is not a textbook for mathematics majors, it is a very comprehensive basic textbook that can lay the foundation for the study of many mathematics major textbooks.

This is also one of the reasons why Chen Zhou’s self-study works very well.

"......cauchy inequality, let f(x) be parsed on the region Ω, and on Ω|f(x)|≤m, then ?zo∈Ω,0＜r≤dist(zo,?Ω

),Honest|f(n)(zo)|≤n!m/r^n..."

While looking at the cauchy inequalities on the textbook, Chen Zhou wrote these contents on the draft paper and how it proved them.

This is Chen Zhou's habit. When reading books, he can deepen his understanding of the knowledge content by using a pen.

Chapter 3 The contents of the cauchy theorem and the cauchy inequality are basically fresh knowledge. Chen Zhou soon filled the draft paper.

By the time he finished reading the content of Chapter 3, he had already written three pieces of draft paper.

These draft papers are all a4 paper.

Next is Exercise Three, with a total of 35 exercises, and the last two questions are Question No. *.

Chen Zhou mobilized the knowledge he just gained today to solve these exercises, while increasing his proficiency in his knowledge.

Chen Zhou finished the previous question smoothly, but the last question was a little troublesome.

"Suppose f:d(0,1)→d(0,1) is an analytical map, prove that for any smooth curve γ in d(0,1), there are s(f(γ))≤s(γ)

, where s(γ) represents the non-European length of the curve γ."

Chen Zhou thought for a while and began to write the proof process on the draft paper: "Proof: parse map f..."

When Chen Zhou finished writing, it was exactly 12 o'clock in the evening.

Chen Zhou stretched and thought that Professor Wu would send information, so he said to Li Li, who was still reading, "Lili, lend me a computer?"

"Oh, you can open it yourself, password 123456." Li Li pushed the computer to Chen Zhou.

He watched Chen Zhou open the computer and log in to the email address, and then downloaded a compressed package.

Li Li asked strangely: "What did you just go down?"

Chen Zhou replied: "The information sent by Professor Wu."

Li Li: "Professor Wu? Why did he send you information?"

"It's the research data of the project." Chen Zhou said, unzipping the compressed package downloaded by the email, opening the folder, pointing to the information above, "Application research on the mutual infiltration and fusion of advanced algebra and mathematical analysis."
Chapter completed!