Chapter 63

"It's ...... Lagrange multiplier!"

"That's right, it's the Lagrange multiplier, I didn't expect this problem to be so cut!"

"The perfect solution, it's flawless!"

"What a genius brain would have come up with such a beautiful and crisp idea. ”

After reading the new solution given by Gu Lu, the leaders of the countries below were boiling.

One by one, with amazed eyes, they looked at Gu Lu beside Chairman Andre.

Thirteen lines!

Gu Lu only used thirteen lines of formula to easily solve this algebra problem.

The standard answer given is a full twenty-eight lines of formula.

More importantly, Gu Lu used the Lagrange multiplier method to solve this problem.

The introduction of the Lagrange multiplier method is a very clever idea.

It is also an important reason for the leaders of various countries to be amazed again and again.

Because, once the Lagrange multiplier method is used to solve this algebra problem, the difficulty of this problem is not even one-third of the original difficulty.

In other words, the emergence of Gu Lu's solution has made a difficult problem into something as easy as IMO questions.

The introduction of the Lagrange multiplier method is indeed a stroke of genius in this set of solutions.

It's not that the Lagrange multiplier is so difficult, it's that the team leaders never thought that this algebra problem could be solved in this way.

Genius ideas, perfect solutions!

The team leaders of various countries admired Gu Lu very much.

Chairman Andre turned his head to look at Gu Lu with curiosity in his eyes, and an intriguing smile appeared on the corner of his mouth.

He glanced at everyone, "Do you have any opinions on Team Leader Gu's solution?"

Everyone smiled bitterly and waved their hands.

Gu Lu's solution is already more standard than the standard answer, what other opinions can they have.

But at this time, the leader of the Mi national team raised his hand and said, "Chairman, I have some different opinions. ”

"Speak. Chairman Andrei nodded.

"Of course, I'm not aiming at the solution shown by Team Leader Gu. Afraid of being misunderstood by everyone, the team leader of the rice country first explained, and then said, "What I want to say is about the question itself." ”

From the solution provided by Team Leader Gu, we can see that the difficulty coefficient of this algebra problem is obviously overestimated by us! As long as the Lagrange multiplier method is used, the difficulty of this problem is even worse than that of the number theory problem in the first question. ”

"I think it's obviously inappropriate to put this question in the second question! So, I propose to remove this question and re-select it!"

Re-topic!

When the leader of the Mi Guo team said these four words, the entire conference room boiled again.

If the test question has already been determined, the topic will be re-selected.

This situation has not occurred in the IMO arena for more than 20 years!

But today, because of a solution to the problem provided by Gu Lu, it is staged again.

Regardless of whether this algebra problem was replaced in the end, this scene will definitely be recorded in the history of IMO development.

At the same time, it will also be recorded, and there will be Gu Lu's name.

On one side of the conference table, Park Changqu was completely frozen.

The current development of events has completely exceeded his expectations.

Originally, he wanted to compete with the solution provided by Gu Lu and the solution he had just shown on stage.

But now it seems that there is no need for that at all.

As soon as Gu Lu's solution came out, everyone had to consider re-selecting the topic.

And what about his solution?

It doesn't seem to have even a small wave.

In an instant, the judgment was made.

Click, click, click

Park Changqu felt that his self-esteem was crumbling little by little.

I have been preparing for six years, but when I really faced Gu Lu again, I was completely crushed.

Just like the one six years ago.

In the conference room, the hustle and bustle continued.

The team leaders of several countries, led by the United States, believe that the second question should be removed from the IMO main topic list and the topic should be re-selected.

But there is also a group of countries that disagree.

They thought that Gu Lu's solution using the Lagrange multiplier method was inherently difficult to think of, so there was no problem with overly simple questions.

The two sides have their own opinions, and they quarrel in the conference room.

"Team Leader Gu, you come to evaluate the theory, is it difficult for ordinary people to think of this solution you proposed?" A team leader of a certain country who stood against putting forward the IMO main topic list of the problem pulled Gu Lu into the crowd, "Did you waste a lot of effort to come up with this solution?"

As the culprit who led to the incident, Gu Lu was watched by a pair of eyes.

Gu Lu smiled helplessly, telling the truth, "It's okay." In fact...... It didn't take much time. ”

Everyone: "???"

It's not that the Chinese people regard modesty as a virtue! But Team Leader Gu ...... What about your modesty?

Under the speechless expressions of the audience, Gu Lu shrugged innocently.

These days, I don't even let the truth go.

At that time, at the first glance of seeing this problem, Gu Lu subconsciously came up with this solution in his mind.

That's why I found it a little difficult to understand after the redundant standard answers were displayed on the screen.

After nearly 10 minutes of discussion on whether or not to re-select the topic, Chairman Andre finally decided not to re-select the topic and continue to use the three topics that had been selected.

After all, it is impossible for every student to be as perverted as Gu Lu and come up with the idea of using the Lagrange multiplier method to solve that algebra problem.

After discussing all this, the time had come to eleven o'clock.

Chairman Andre handed the three questions to the assistant and asked the assistant to arrange for someone to translate the questions into the Chinese language.

In order to avoid the team leader's leakage, the activity area of more than 100 team leaders from various countries was temporarily limited to this office building.

It was not until the afternoon when the candidates entered the venue that everyone was free to move.

............

Gu Lu returned to the seat in the conference room with a faint smile on his face, and saw that Team Leader Park Changqu was lowering his head, and his face was gloomy and fell into a state of autism.

Gu Lu smiled and said, "Team Leader Park, why don't you go down and have lunch together?"

"No, I don't. The self-contained Pu Changqu said in a muffled voice, "It's uncomfortable, I don't want to eat." ”

"Uh...... Alright then, I'll go down first. ”

Gu Lu ...... You wait!" Park Changqu stopped Gu Lu, raised his head, and looked firm, "This IMO, our South Korea will definitely win the first place!

Gu Lu shrugged his shoulders and turned his head to leave, "Heh, whatever you want, you can be happy." ”

There are some things that you can't just say.

For the champion of this IMO team competition, Gu Lu is also bound to win!

Looking at Gu Lu's departing back, Pu Changqu felt like a punch on cotton, and the fighting spirit that he could barely support suddenly dissipated.

"The champion will definitely stay in our South Korea!" Park Changqu clenched his fists hard.

This is not just the case in China and South Korea.

There are many powerful competition powers, and the goal this time is all to run for the championship.

After all, a CERN researcher spot, even these big countries in Europe and the United States, is very hot.

Not to mention China, South Korea, and island countries that have not joined CERN.

It is foreseeable that this IMO will definitely be the most tragic one.

Many countries are at the end of their rope and are moving towards that championship trophy.

............

PS: Ask for recommendations every day.

The rankings fell back into the rankings, crying and chirping.