This young man Xu Mang knew, and when he got out of class the day before yesterday, he told Xu Mang that this was a doctoral class, and he was a good person.

"Huh?"

"Really?" Xu Mang said embarrassedly and politely: "Maybe I'm sleeping, is there just a doctoral class here?"

"How many more do you want?" the student said.

"Oh..."

"It's... Is there too many students in this doctoral class?"In Xu Mang's imagination, there shouldn't be so many people studying for a doctorate, good guy... I saw in the multimedia classroom that there were at least eighty or ninety people.

There are so many PhDs?

It's worthless, right?

"It's not just the math department, there are many other departments. The young man, who was not a young man, asked Xu Mang, "Are you here to observe?"

"Hmm!"

"What's that... They say that the quality of teaching in the doctoral class is high. Xu Mang said with a smile: "I felt it the day before yesterday, and it was really different... Besides, didn't the professor just assign a question, let me see how strong the PhD students are. ”

Hearing Xu Mang's words, the young man smiled bitterly: "That question... I'm sure almost no one can make it. ”

"Huh?"

"Oh...," Xu Mang nodded, "It's really difficult." ”

afterwards

Xu Mang and this young man gradually got acquainted, and originally thought that he was a Ph.D. student in the Department of Mathematics, but he got it wrong... People study economics.

"My girlfriend reads economics and trade. Xu Mang said: "I thought that I didn't need to learn mathematics to study economics, but I never thought that if you study economics, you should be proficient in mathematics... Brother is tired. ”

"It's okay..."

"Eat with a mouthful. The young man smiled bitterly and said silently, "I'm sorry, I'm more realistic. ”

"It's fine. ”

"I'm more realistic than you. Xu Mang showed a smile of underweight, and said silently: "Brother Doctor of Economics... There are many places to work in the future, and it is estimated that there is an annual salary of one million. ”

Of course

Xu Mang just said it casually, and he didn't know how much money he would give, but it was always right to say it higher.

Man...

I love to listen to it.

At first, Xu Mang wanted to help his father-in-law recruit this young man, but think about it carefully... People may not look down on it, and what if the other lion opens his mouth and comes up to ask for an important position?

I can pat my chest, but the problem is all thrown to my father-in-law, I'm afraid that at that time... himself and Xiaoman have come to an end.

Alas...

"Dude?"

"Do you think there will be a way out for a person like me to study economics?" asked Xu Mang curiously.

“...”

"Brother, don't make trouble!" the young man laughed.

Xu Mang: Embarrassed

soon

The number of students in the multimedia classroom gradually increased, and soon the number reached about 80.

Many people didn't react to the extra stranger, after all, this is a comprehensive classroom, I just met yesterday, but I didn't come the next day, which is a normal situation.

"Did you make that question?"

"No... It's so hard, I thought it was a simple power series convergence problem at first, but who knew that when I solved it to a quarter, I found out that it wasn't!"

"Yes, yes, yes, it's not a matter of power series convergence at all... The professor deliberately set a trap. ”

"Alas... You are also stupid, since the professor dares to give two days, it means that you can't solve it if you give you a week!"

Suddenly,

A wail rang out in the classroom.

There are also a few people who are indifferent,

They belong to the mathematics department themselves, and it doesn't matter about it, they have already done it, but they don't know if it's right.

The professor came in,

Still with a textbook.

Since there was no time, the professor did not attend the class at this time, but the students below were quiet.

At this moment,

Xu Mang received a phone call.

It's Xiao Man.

“...”

"Hey?" Xu Mang sneaked out of the back door and asked in a low voice, "What are you doing?"

"Where did you die?" Yang Xiaoman said angrily: "I found out early in the morning that you were not there... Did you sneak into someone else's classroom again to make trouble?"

"Xiao Man..."

"Actually, I'm not the kind of person you think I am. Xu Mang said helplessly: "I'm a person... Not bad. ”

"Get out!"

"I'm going to the competition site, anyway, be a good man!" Yang Xiaoman admonished, and then hung up the phone.

Alas...

This female elf,

The desire to control is really strong!

Xu Mang can understand why Xiao Man is like this, there is no other reason, that is, he is too handsome.

Sneaking back to the classroom,

Within a minute, the class began.

"Ahem!"

"We're going to talk about the teaching first, and then we're going to leave half of the time for the topic the day before yesterday. The professor said.

Words fall,

It caused discomfort to everyone present.

Half the time?!

Sure enough, the difficulty of this question is unimaginable.

Hearing the professor's words, most people's emotions gradually calmed down, in fact, it was not that they couldn't, but that the topic was too difficult.

Balanced, balanced.

At this point,

Xu Mang glanced at the buddy next to him, and found that he took a long breath, as if he had gained some relief, and after thinking about it for a while, Xu Mang thought that this old brother might have reaffirmed his IQ.

Not stupid,

It's that the topic is too difficult.

lesson

It's boring.

Xu Mang was about to fall asleep when he heard it, and the sleepy waves continued to wash the sand of consciousness, but fortunately Xu Mang held back, and he secretly took out his mobile phone.

Due to the fact that the account of Honor of Kings was blocked for a week, Xu Mang could only play Hearthstone, and after updating the game version, Xu Mang found that there were many orange cards recently.

What to do?

Krypton!

Click, Xu Mang's krypton was 20,000.

In fact, Xu Mang doesn't like to play Hearthstone, what he likes is the process of opening the card pack inside, especially 'Wow! Golden Legend!', which can make people feel happy.

It's a pity...

Xu Mang is a non-chief, very non-very non-chief.

However, such a person has the heart to become the emperor of Europe.

It's not,

It took nearly 20,000 to appear once in the picture of three eggs.

Screenshot,

Send it to the game group.

Elegant and easy-going priest (Xu Mang): Three eggs from the free card pack [Picture]

And then the swarm blew up.

Xu Mang saw all kinds of words from the members of the group, all of which revolved around the four characters of Ou Huang, and then showed a happy smile, these 20,000 are really worth it!

"This classmate!"

"What are you smiling at?" The professor glanced at Xu Mang, and when he saw that he was stupid, he couldn't stop laughing, and said on the spot: "Pay attention to classroom discipline." ”

"Oh..."

Xu Mang hurriedly put away his smile and put on a serious look.

soon

Finally staying up to the middle break, Xu Mang slipped away to the toilet, but when he came back, there were three or four piles of people in the classroom.

"What's going on?"

"Is the class too boring, and the students fainted?" Xu Mang hurriedly got up in line with the mentality of eating melons, it turned out that everyone was discussing the topic, and it was... Immediately, the professor wants to test the students' results.

Class

The students returned to their seats.

The professor in front of the podium asked, "Who made that question the day before yesterday?"

Words fall,

Scattered only three or four people raised their hands, and they were all from the mathematics department.

In the face of this situation, the professor has no complaints, after all, the difficulty is there, if all of them are solved, it does not mean that there is a problem with their level.

"Small money. ”

"Tell me about it. The professor said to one of the students.

Subsequently,

The classmate named Xiaoqian walked to the podium, inserted a USB flash drive and clicked on the document, and began to explain his problem-solving process.

"Here..."

"There..."

Xiao Qian's classmates spoke loudly, and the classmates below also listened very carefully, but Xu Mang was the only one, and he was confused and at a loss.

What's he doing?

Why can't I understand it?

Oh, my God!

Is it my business ability that is not good again?

Stop... Xu Mang really couldn't understand what he was talking about, the logic was chaotic, the process was complicated, and it was outrageous.

Ten minutes later,

This Xiao Qian classmate finally finished speaking, and then applause broke out, Xu Mang also applauded, although he didn't know what happened just now, but it was appropriate to respect the fruits of other people's labor, this is a matter of politeness.

The professor was expressionless, and then called the next classmate, then another, and then two...

Xu Mang:( ̄△ ̄;)

This... What's going on?

In fact

These people all had the correct answers, but almost all of them went around in a big circle and solved the problem in a very complicated way.

It's a bit time-consuming and laborious.

Sure enough,

"The answer is true, but the process is problematic and not streamlined enough," the professor said. ”

subsequently

The professor began to analyze the power series convergence problem for everyone present.

"First of all, don't be blinded by the title. The professor said: "In the future, you will encounter a lot of situations like this, which seem to be a power series convergence problem, but in fact it is a different problem, but you will find that the final answer is back to power series convergence." ”

“...”

“...”

“...”

professor

You're putting it a little simply!

This is clearly a fusion of various elements in it, and once you get in, you can't get around it at all.

In the next twenty minutes,

The professor analyzed the pitfalls of this problem and the matters that need to be paid attention to in detail, and Xu Mang and the professor have the same opinion, all the problems are on these points, as long as the logic of each is straightened out, the problem can almost be solved.

Seemingly...

You don't need yourself today.

however

Things are far from being as simple as Xu Mang imagined.

subsequently

The professor began to solve the problem for the students on the spot, and in the first steps, there were no accidents, almost the same as Xu Mang's, but at a very critical point, Xu Mang found that there was a problem in the professor's problem-solving process.

It's not wrong to be wrong,

It's just that it gets cumbersome after that.

really

After the problem in the middle, the professor's problem-solving process was redundant, presumably... Seven steps are redundant.

In fact, this is already a standard process, but for Xu Mang, it can be streamlined a little more to make it more perfect.

"That's all about it. The professor finally wrote an answer and said with a blank face: "This question needs to focus on logical thinking and find the corresponding balance in each key transformation." ”

"Alright. ”

"Down..."

The professor was about to say 'class is over' when he was suddenly interrupted by a student.

"Professor!"

"I think there are some flaws in the process you just made of solving the problem. Xu Mang stood up and said to the professor, "Your process is not streamlined enough!"

......