Chapter 4 Others Brush Questions, I Brush Books

At 6 o'clock in the morning, I felt the bed board vibrate slightly. Liu Rui squinted his eyes that hadn't woken up yet, and looked around for the source of the shock. Just when he saw Lu Zhou, who was sleeping on the other side of him, was climbing down with a ladder, he hummed and asked: "Elbow, get up so early?"

Afraid of disturbing the other two sleeping roommates, Lu Zhou whispered back.

"Um."

Liu Rui asked without mercy.

"Still working part-time?"

Lu Zhou hesitated for a moment, then shook his head and said, "No, I will rest for a few days."

"Then where did you go so early?"

"library."

Liu Rui was no longer sleepy.

Going to the washbasin to brush his teeth, Lu Zhou turned around and went to the toilet. After coming out of the bathroom, he saw Liu Rui also crawling under the bed, so he asked strangely, "Aren't you going to sleep?"

"Review." Liu Rui picked up the toothbrush bowl and trotted to the balcony washbasin.

Looking at his roommate who was like a great enemy, Lu Zhou felt a little dumbfounded. He shook his head and said nothing. He put on his shoes and bag, and went out.

Jinling in June is like a furnace, with the exception of five or six in the morning.

The air was mingled with the fragrance of morning dew, and the breeze that occasionally brushed across his cheeks was not hot, but refreshing. The campus at 6 o'clock is like a quiet girl walking from the morning and evening, and it seems to be two worlds here in the evening.

I went to the cafeteria to buy two buns and a cup of soy milk. After breakfast, Lu Zhou walked slowly to the library.

Jinling University is worthy of being a well-known institution of higher learning in the whole country. The staff of this library have not even come to work, and many people are already standing in the open space outside reading in the morning.

I also took out the Level 4 vocabulary book and memorized it for a while. Although it was not as good as in the library, under the influence of the surrounding learning atmosphere, the effect was not bad. Lu Zhou waited at the entrance of the library until 7:30 when he saw that the library staff was late and finally opened the door.

As the door of the library opened, the postgraduate entrance examination army poured in like a tide, and soon the open space at the entrance of the library was cleared.

As the crowd poured in, Lu Zhou did not rush to start swimming in the sea of ​​books, but went to the bookshelf to pick up a copy of "Advanced Algebra Tu Boyun Edition", and then went to the corner of the library to find a secluded place to sit down.

Lu Zhou estimated that in the state of immersive reading, it takes about an hour to two hours to fully understand the knowledge points of a unit, which includes knowledge point memory, brain calculation, question type analysis and other links.

Judging from the number of pages remaining, the book "New Lectures on Mathematical Analysis" in hand can last up to one morning. In the afternoon, he planned to take this opportunity to supplement his knowledge of advanced algebra.

Taking a deep breath, Lu Zhou turned the "New Lectures on Mathematical Analysis" to the place where he had bookmarked yesterday, and continued to focus on the book.

Soon, he entered the state of yesterday again, forgetting foreign objects, as if the only book in the world was me...

Time passed by, and at half past eleven, Lu Zhou let out a long sigh and put down the book in his hand.

This "New Lectures on Mathematical Analysis" is completely finished, and its value coefficient has dropped to 5.

This also just confirmed Lu Zhou's guess that the system's evaluation of the value coefficient of books is not based on the academic world of this world, but based on his own knowledge level.

As for why it is 5 instead of 0, it may be that there are still places in this book that he has not fully understood, and he may have to read it again if he wants to fully understand it.

However, Lu Zhou obviously wouldn't do this, and wasting valuable in-depth reading time in order to dig out the 5-point value factor was a loss-making business.

Just as it was time to eat, Lu Zhou put down the book in his hand and walked outside the library.

When passing by the main entrance of the library, he glanced at the holographic image at the door, and saw that the remaining time for the on-hook task had become 18 hours.

Lu Zhou suddenly felt that the task should not be completed so quickly. In these 6 hours, he felt that he had learned more than the whole year last year.

Thinking of the book "Advanced Algebra" that had not been opened on the table, Lu Zhou touched his chin on the way to the cafeteria.

At the end of the semester, there is still a C language to take the test. Should I stop looking for this C language book?

And English.

I just don't know if English books have a value factor. Anyway, there are no English newspapers at the entrance of the library. This black technology system seems to have a strange prejudice against liberal arts majors, which is not very good.

Using the meal card to swipe the bowl set, Lu Zhou hurried back to the library after eating. First, I went to the counter to return the books I had read, then went to the bookshelf again, took the fifth edition of C Language from the bookshelf, put it under my arm, and returned to my seat.

After the lunch break, there were more people in the library.

Lu Zhou was about to enter the next knowledge point while nibbling on the book of "Advanced Algebra", when he suddenly felt his arm being poked by something. Looking sideways, I saw a beautiful girl wearing round-frame glasses and a single ponytail, holding a pen in her hand, looking at herself embarrassedly.

"Classmate, I'm sorry to bother you... can I ask you a question?"

Lu Zhou nodded generously and said, "No problem, just ask."

Although he was interrupted to brush the book, he was not angry at all.

To ask why.

I have to say that human beings are aesthetic animals, and in interpersonal communication, appearance is really important.

Why didn't this girl find anyone else, but found me?

It's not because we look better than others!

Lu Zhou likes to talk with such discerning, honest and honest people.

Don't do anything, just be happy!

"Thank you." She whispered thank you, the girl gently lifted the chair, sat next to Lu Zhou, and handed over the pen and scratch paper thoughtfully.

Lu Zhou was not polite. After taking the pen and paper, he glanced at the question.

"Let me see... the limit, right?"

Try to find positive numbers a and b so that the equation (X→0)lim1/(x-bsinx)∫t/√(a+t)dt=1 holds. (∫ The upper corner is marked with x and the lower corner is marked with 0)

It seems that I have never done this question, but when I was reading a book just now, it seemed that I had seen a similar question type.

It happened that I just watched Gaodai, and it is good to test the strength of the system a little.

Habitually turned the pen, Lu Zhou thought for a while, and after a minute, he said, "It's solved."

"Here, this is solved?" Chen Yushan looked at Lu Zhou in disbelief, thinking that you haven't even started to write this yet, so how could it be solved.

But to be honest, he was also taken aback by his own problem-solving speed. Although he encountered this kind of problem before, it was not impossible to solve it, but he would never solve it so easily and smoothly, even without scratch paper. Use, the problem-solving process will be clear.

Not being pretentious, Lu Zhou grabbed the pen without saying a word, wrote down the process of solving the problem on the scratch paper, and explained it while writing: "The typical 0/0 type is indeterminate, directly use the Labida rule. Well, the first step is to disassemble the integral. Isn't this difficult? From (X→0)lim(1-bcosx)=0, we can get b=1, and then bring it back to the original formula, we can solve a=4 , look at the answer and see if my solution is correct."

Chen Yushan stared blankly at the draft book, only feeling that the speed of this guy's problem-solving was faster than his listening speed.

Especially when the last two answers were written, her thinking was still stuck in the step of solving the integral.

With doubts, she opened the answer, her eyes suddenly widened.

That's really the answer! ?

Noticing the expression on the girl's face, Lu Zhou, who was a little ecstatic, smiled and turned his pen and said, "It's a very simple application of the Law of Labida, and the calculation itself is not difficult. Speaking of your freshman year? What major?"

Chen Yushan blushed and whispered, "I took the postgraduate entrance exam..."

As soon as she finished speaking, her face turned even redder.

Not shy, but angry!

So annoying!

Isn't it just solving a math problem, what a stinky show! I haven't touched my advanced math knowledge for so many years, so what if I gave it back to the teacher? It really has no grace at all, it deserves a single dog! Deserving to be alone in the library!

Thinking of this, Chen Yushan felt a little relieved.

As for herself going to the library alone, she chose to ignore it.

"Uh." Lu Zhou's expression was a little embarrassed. He thought he was the same grade as himself, but he didn't expect to pretend to be a senior sister.

Just as I was about to say sorry, a heavy cough came from the row in front of the two of them.

Realizing that her two speeches disturbed other people, Chen Yushan blushed, stuck out her tongue, and returned to her seat with the exercise book and scratch paper.

Now Lu Zhou has no chance to apologize, let alone ask his name and WeChat ID...

Sitting there for a while, he shook his head and continued to pick up the "Advanced Algebra" that he had not finished chewing.

How is it important for girls to learn?

Relationships?

Sorry, real Xueba doesn't need that stuff.

Raising mathematics to LV1 is equivalent to owning the whole world!

Soon, Lu Zhou entered the state and completely forgot about this matter, just as a small episode of brushing books in the library.