Great Country Academician

"Brother Chuan, is the training intensity over there also so high?"

In the cafeteria, the little round-faced Lu Tianrui asked curiously while picking up the food.

He has been observing for a whole day today, but he found that Xu Chuan didn't look strange at all. Such a high-intensity training camp didn't seem to exist at all, and he could easily solve every difficult problem after consolidating in the afternoon.

Xu Chuan said with a smile: "The intensity of Wujing Guoji is not as high as here. There are often experiments there, so there is more time to rest."

"Then how do I feel that you have nothing to do? Is this intensity not enough?"

Lu Tianrui smacked his mouth and asked.

"It's okay, it doesn't feel very difficult, just to consolidate some basic knowledge."

Xu Chuan replied that although the intensity of today's training camp is high, the geometry knowledge explained is not very advanced, but some relatively basic things.

But this way of explaining it is very suitable for him.

And in his opinion, this training method is actually quite good.

For these contestants who can enter the national competition, the basic things have already been learned, but it does not mean that these basic things do not need to be learned again.

On the contrary, the more basic knowledge, the higher the importance.

Just as all mathematics evolves from 1+1=2, so do those basic formulas and knowledge, which are the beams and roads of complex mathematical problems.

All mathematical problems are solved by deriving them step by step.

Hearing this answer, the corner of Lu Tianrui's mouth twitched. He looked at Xu Chuan resentfully and buried his head in eating. He didn't want to talk anymore, and was hit again.

You shouldn't have asked this pervert!

After dinner, it's the so-called test time.

One test paper, three questions, two hours, and the paper will be collected on time when the time is up. The content of the test paper is the knowledge points explained today.

The score of this test paper will become one of the keys to whether a member of the national team can join the national team.

Not all students can bear the high-intensity training, especially those who entered the national competition for the first time.

Early the next morning, another student collapsed, with a high fever of 38.9 degrees, and was rushed to the hospital to be put on water.

The doctor said that he had a febrile convulsion caused by excessive stress and excessive use of the brain, and he needed to rest for at least a week.

To put it simply, the CPU of the brain can't bear it after being overloaded for a long time, and it crashes directly.

After a week of rest, it can be said that this student has missed the national team.

Witnessing all of this, Xu Chuan sighed a little. Those who engage in scientific research really need a good body.

Let's start running from three kilometers to five kilometers in the morning.

Geometry on the first day, functions on the second day, and functions on the third day.

The lecturer on the morning of the third day was academician Zhang Weiping, a director of the Mathematics Society. An academician of the Academy of Sciences came to give a lecture to a group of high school students. I have to say that IMO is still highly valued in China.

The style is completely different from the first day and the second day.

Whether it is the geometry lecturer on the first day or the function teacher on the second day, they can't wait to finish reading a book in one day, but Academician Zhang's lecture on the third day is slow and orderly, neither fast nor slow.

But what he said is not the basics, but the transformation between the difficult function application solution and the Dirichlet function relationship.

This made many trainees a little confused for a while.

Especially the high school seniors who had entered the training team last year, they were even more confused, not knowing what kind of routine this year was.

Normally, the function part should also start from the basics, advance from the basics, and consolidate the high school knowledge points, which was the case last year.

But today's course is very strange, in-depth knowledge of Dirichlet functions in college advanced mathematics.

It is true that the Dirichlet function is the content of high school, but high school does not study it very deeply.

The Dirichlet function will be taken seriously only after advanced mathematics is studied in university. In previous years, the IMO competition questions generally did not take this part very much.

Not only the explanations during the day, but also the test questions at night are very interesting.

On the podium, Zhang Weiping distributed the test papers in his hands, and continued:

"There is no time limit for tonight's test, and the test scores will not be included in the total test scores of the national collection, but those who can complete these three math problems within 15 minutes will get an extra five points reward, and those who can complete these three math problems within half an hour Students who answer the question will get an extra three points reward."

As soon as these words came out, there was a bit of noise in the classroom, and everyone was gearing up to meet the challenge!

Extra five points!

This is very important for the members of the training team.

You must know that the total score of the test paper every night is only 15 points, and the difficulty of the questions is quite high. Not everyone can get full marks every day, or if they get more than 5 points, they will be able to squeeze into the national team.

After distributing the test papers, Academician Zhang Weiping held a thermos cup and sipped tea while looking nervously and expectantly at the students doing the questions in the classroom.

Today's course was originally not in the training of Guoji. Most of the knowledge and topics explained were dismantled from the previous information warfare deciphering encrypted messages. The purpose is to train and select students with talents in this area, and focus on nourish.

Guoji's training was extended for ten days for this purpose.

Among this group of students, Xu Chuan was the one he looked forward to the most.

I don't know how this player who got full marks in last year's CMO can perform.

In the classroom, Xu Chuan has already got the test questions for tonight.

The three questions are all deformation functions of the Dirichlet function, which are quite difficult.

The first question is combined with the composite function to find the number of roots; the second question is combined with the conic section to verify the light reflection point; the third question is combined with the sequence to find

"This topic is very interesting. I'm afraid the reward points are not so easy to get."

Xu Chuan looked at the questions in his hand with great interest. Although the three questions were of different categories, they seemed to be taken from a certain big question, because some values ​​of the questions were not modified.

Judging from the difficulty of the questions, most of these students in the national competition can still do it if they want to do it, but if they want to get this reward point, there may be only a few who can do it.

There is a time limit after all.

But for him, it is not difficult for him to solve these three big questions in fifteen minutes, and it doesn't even take ten minutes.

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