Inside the Sage's ♂ Forest.

Cheng Nuo: "Did the high math teacher name him@袁华?"

Yuan Hua: "Not yet, I'm ready to start talking about the first chapter, I guess I won't order it." ”

Yuan Hua: "Brother, you won't ...... Get ready to skip class!"

If you skip class at the first class of school, you're really great!

Cheng Nuo: "What can I do, I'm also desperate!!"

Yuan Hua was silent for a moment.

Yuan Hua: "Then you didn't listen to the class, what should I do with the high math course?"

Cheng Nuo: "It's okay, I finished reading "Advanced Mathematics" in the summer vacation. Basically, there is no difficulty, and it is all the most basic things. Even if I were to take the final exam right now, I would be fine. ”

Cheng Nuo was right.

In the last two or three days before the end of the summer vacation, Cheng Nuo stayed at home and previewed all the courses of his freshman year of finance.

As for the first volume of high mathematics, Cheng Nuo only took more than half a day to complete all the previews.

Then, I found the final high math test paper of Tsinghua University last year and did it.

Final Score...... 100 points!

It's easy and stress-free! So simple that Cheng Nuo even wonders if he is doing elementary school math problems.

At that time, Cheng Nuo wondered, why do many people say that high mathematics is difficult?

Is it hard?

It's very simple, okay.

Someone even wrote a poem for it.

"High Numbers Difficult"

Author: Forced college students

The difficulty of high numbers is difficult to reach the blue sky! Functions and limits, how blank is the beginning! One hundred and sixty pages are not in line with the answers. There is a limit to the number function, and two criteria are used to achieve it. Example exercises, strong men die, and then final exams are linked. ...... Although the university is happy, it is better to return home early. It is difficult to go to the blue sky, and it is difficult to look west for a long time.

However, this is not a problem that Cheng Nuo is entangled in for the time being.

Cheng Nuo: "Okay, that's all for now. I saw that the teacher was about to give a lecture on the podium. When the first class of this big class is over, I'll find a chance to sneak back. ”

Yuan Hua: "Hmm. ”

Cheng Nuo put away his phone and opened the textbook.

Belch......

Well, this is a high school substitute class, what kind of is it to take out a high math textbook by yourself!

Cheng Nuo scratched his head, stuffed the advanced math textbook back into his school bag, and then took out a draft book.

If it comes, it will be safe.

Since Cheng Nuo is here, he naturally can't sit here.

It just so happened that Cheng Nuo wanted to take this opportunity to feel the learning atmosphere of the Department of Mathematics.

Isn't it the high generation?

Although the subject of high generation is a specialized course of the Department of Mathematics, in the final analysis, it is only a basic course of the Department of Mathematics.

The difficulty is greater than that of the high number, but it is not too big either.

Cheng Nuo doesn't think that going to Gaodai will be difficult to live in. Even though...... It's in the absence of textbooks!

Cheng Nuo glanced at the classroom.

Since their Department of Finance and the Department of Mathematics were training on the same playground during military training, Cheng Nuo had long known that the number of people in the Department of Mathematics this year was about 30.

I just swept it. In the entire classroom, there were a total of 32 people except for themselves and Teacher Liao on the podium.

30 boys and 2 girls.

A rather horrible male-female ratio.

This made Cheng Nuo pat his chest happily. Sure enough, it was a wise choice that I didn't choose a mathematics department in the first place.

However, this ratio of men to women is also unreasonable.

After all, Tsinghua's mathematics department has been like this for many years. Girls in their mathematics department are like national treasures.

In the classroom, Cheng Nuo also found a familiar figure - Zhao Yang.

The freshman in the mathematics department who competed with Cheng Nuo in the military region. He was sitting in the first row at this time, listening carefully to the teacher's lecture on the podium.

Let's go it......

Teacher Liao, who was standing on the podium, did not speak at length, and did not blow a lesson in the first class like teachers in other schools.

Teacher Liao spent five minutes explaining the content of the course, the examination method, and a brief answer. I didn't say what projects I had participated in, or what awesome students I had brought out.

These things are all false. As Tsinghua teachers, they can't finish the list of honors in two classes.

But they don't have to.

If you have that time, it is better to talk about two more questions.

"Come, let's take out the textbook and put the first chapter together. Teacher Liao said to everyone while opening the PPT courseware.

Chapter 1 of Advanced Algebra, Polynomials.

Section 1, Number Field.

Section II, the concept of divisible.

......

Teacher Liao lectures very quickly.

How fast is it?

In some places, the senior teachers on the stage have already finished speaking.

But under the podium, there are still many people who can't find this theorem, where exactly in the textbook.

Formulas, theorems, and example problems were instilled into the brains of more than 30 students in the classroom by the senior teacher.

In each section, Mr. Gao Dai pointed out the key points, and then revealed one or two typical example questions, and continued to the next section.

Under the podium, every student in the Department of Mathematics was as ready as if they were facing the college entrance examination, looking up and listening, while writing down something in their textbooks or notebooks.

But even so, there are still only a very small number of people who can keep up with the rhythm of the senior teachers.

Most of the students were in a state of confusion, staring blankly at the dense mathematical symbols on the blackboard.

Who am I, where am I, what am I supposed to do?

is like the bearded and chubby classmate sitting next to Cheng Nuo.

In the first ten minutes, I can still keep up with the rhythm of the senior teacher.

But when he accidentally dropped the pen on the ground, lowered his head to pick it up, and then raised his head to continue listening to the lecture.

I suddenly wanted to cry without tears......

I can't understand it!

In this short period of four or five seconds, Teacher Gao Dai has already talked about two or three key steps.

This......

He looked at the pile of mathematical formulas that seemed clueless to him at this time, and he was completely speechless.

In stark contrast to most of the people in the class, it is Cheng Nuo's side.

Other students are either looking up and listening carefully to the lecture, or they are looking down and writing hard to take notes.

Cheng Nuo is different.

Although he didn't have a textbook, let alone a preview, he didn't know what the first chapter of the high school textbook was about.

But this did not prevent him from attending the lecture in the slightest.

Other students in the Department of Mathematics think that the fast pace of teaching is just right for Cheng Nuo.

On the podium, every time Mr. Liao speaks a formula or concept, Cheng Nuo can quickly grasp it.

Those example questions or something, Cheng Nuo basically glanced at them and calculated them in his mind. The steps are basically the same as what Mr. Gao Dai said.

As for notes or something, they don't exist! It's impossible to take notes, it's impossible to take notes in this life. I can only rely on perfect marks occasionally to make a living.

Brain! It is Cheng Nuo's best notebook! If you want to use any knowledge points, you don't have to go through the trouble to go through the notes, just call it up directly from your mind.

Oh!

Cheng Nuo sighed. With the halo of a scholar, he is so cheating, and he is also very helpless!

Cheng Nuo also took advantage of Teacher Liao's lecture to take a sip of water, and simply chatted with Mu Leng for a while. Looking up, I roughly scanned the courseware and the formulas on the blackboard, and I was able to keep up with the progress of the senior teacher.

Excellent, beautiful!

In the entire classroom, I'm afraid there is only Cheng Nuo, who is so relaxed and leisurely.

The most terrifying thing is that Cheng Nuo ...... Be a finance student!

The first chapter of "Advanced Algebra" has polynomials, a total of eleven sections, fifty or sixty pages!

Liao's trip took less than half an hour to finish all the talks.

Yes, yes, it only took half an hour!

This is the legendary Tsinghua speed!

It is not so much the end of the lecture, in the eyes of the students in the mathematics department, it is better to say that it is just a thread from beginning to end.

Theoretically, they almost got a rough idea.

But when it comes to actual combat, when they do specific topics, whether they can skillfully apply these theorem knowledge is still a false proposition.

On the podium, Liao Zhixing threw only a small piece of chalk to the lectern mountain, rolled up the sleeves of his suit, and asked everyone with a smile. "Did you understand what I said?"

"Got it......

"No ......"

Two different voices rang out below.

Liao Zhixing smiled faintly, "Do you think that the speed of my lecture is a bit too fast?"

Everyone nodded in unison, except, of course, Cheng Nuo.

Liao Zhixing shook his head lightly, "No, no, no, it's not that I'm talking fast, it's that your understanding is too slow." I just saw that when I was lecturing, many of my classmates kept their heads buried in notes. On the contrary, there are very few people who keep their heads up and listen to the lecture. ”

"I'm not against you taking notes, but always keep the point. Don't let me say anything, just remember what you want. ”

"And ......"

Let's go for it~

Liao Zhixing said a lot bitterly, "The current speed is only the most basic speed. If it weren't for the fear that you wouldn't be able to keep up, I'd be ready to finish half a book in one class. ”

One lesson, half a book!

The whole class had a thought of dying.

Although, they are all top students who have come out of millions of candidates across the country. But it's just ordinary people!

Half a book in one class, even if the champion of this year's college entrance examination comes, it may not be able to bear it!

"Okay, whether you understand it or not, let's start with two questions to practice your hands. Liao Zhixing opened a PPT, and a title was presented on it:

Find all complex coefficient polynomials satisfying f(x²)-f(x)f(x+1)=0.

The topic is short and seems simple at first glance.

But often, the easier the seemingly simple question, the more difficult the operation.

"This question is a bit difficult, you can try it first, and I will find a classmate to answer it later. After speaking, Liao Zhixing picked up the thermos cup soaked in wolfberries and drank it in a small sip.

The senior teachers of Tsinghua University are all called difficult topics, and their difficulty coefficient should not be underestimated!

It's a hard stubble!

However, since they chose to apply for the mathematics department, they have long been prepared to face one mathematical problem after another.

Under the podium, the students of the mathematics department took out paper and pencil one after another, lowered their heads, and frowned while shutting on the paper.

In the classroom, no sound can be heard other than the sound of the tip of the pen rubbing against the paper.

The chubby classmate with a beard was also writing and drawing on the paper with his head down.

Although, he didn't understand much of what he was doing before, and he didn't know what he was calculating.

A minute later, the chubby classmate, who had no clue, threw the scratch paper aside in frustration.

Just when he turned his head and was about to go to see the progress of other students, he suddenly saw the figure sitting next to him, who was completely in two worlds from the surrounding environment - Cheng Nuo!

What made the chubby classmate wonder was that when other students were burying their heads in solving the problem, Cheng Nuo, who was sitting next to him, seemed to be unmoved. He propped his head on his hand and looked away. On the table, there was nothing but a notebook. Yes, there are no textbooks, no pens.

And on the notebook, it is also blank.

This made the chubby classmate wonder how the guy next to him was admitted to Tsinghua University.

I've tried so hard to hear it!...... It's still a tragedy, I didn't understand! But after all, I tried my best!

But you're a bit too much for a guy who doesn't even bring textbooks, don't take notes, and don't do topics!

It's still in class, and it's a little inconvenient.

Chubby decided that after class, he must preach and talk about the tutorial well. Let Cheng Nuo know his way back, don't waste his studies, and become a useless person to society.

Five minutes later......

There are still ten minutes left until the end of class.

Liao Zhixing stopped everyone's answers, propped up the lectern, and asked with a smile, "Okay, is anyone willing to volunteer to come up and solve this question?"

Silence, the silence of a falling pin.

No one raised their hand, and no one answered.

Liao Zhixing's face showed a slight embarrassment. "Looks like everyone is very shy!"

"In that case, then I'll call a random classmate!"

After speaking, Liao Zhixing's eyes swept in the classroom.

didn't solve the problem, the chubby classmate who was already weak in his heart, lowered his head, like an ostrich, and wanted to lower his head into the soil.

Liao Zhixing's gaze, after scanning the classroom for a week, suddenly fell on the chubby classmate.

The chubby classmate who was lowering his head felt the chrysanthemum tighten violently inexplicably.

"Come, that chubby classmate, come up and tell you about this question. ”

The chubby classmate looked up, looked around, and pointed to himself.

"Yes, that's right, it's you, that bespectacled, chubby classmate!" Liao Zhixing said with a smile.

The chubby classmate stood up with a very reluctant face and stood in place.

"This chubby classmate, come to share with you your solution ideas. Only by brainstorming can we make progress together!" After speaking, Liao Zhixing looked at the fat classmate with encouraging eyes.

The chubby classmate hesitated for a moment, and then said stubbornly, "Teacher, I'm ...... I won't!"

"No?" Liao Zhixing was stunned, "This ...... By the way, what's your name?"

"Li Xiurui. Chubby said in a weak tone.

"Chubby classmate Li Xiurui, yes, I'll call you this in the future. ”

Li Xiurui has a black line.

Teacher, you can just call me by my name, and the first two modifiers don't need to be used......

"You shouldn't be this!" Liao Zhixing walked back and forth on the podium, and Dun Dun taught, "It's good that this question is difficult, but as long as you all understand what I said before, and understand it thoroughly, it's still no problem to make this question." ”

"Teacher, I'm ......," Li Xiurui said.

Teacher Liao raised his hand to stop, "If you don't believe me, you can call the other people in our class and see if they can solve this problem." If not, then there is a problem with my lecture speed, and if so, it means that you have not mastered the basic knowledge well. ”

"Then I'll choose him!"

Li Xiurui stretched out his hand and pointed, and without hesitation, he chose to sit next to him...... Cheng Nuo!