Chapter 62

The standard answer to this algebra question is displayed on the large screen in the conference room.

Everyone looked at it together.

"This should be the most standard answer."

"Well, although there are other solutions, they all belong to the side and left-handed path. The solutions on the screen should be the most common and easiest to think of."

"The logic is clear and the steps are simple and clear. I think there should be no other modifications. It seems that I can get off work early today."

The team leaders were talking in a low voice and nodding repeatedly, obviously very satisfied with the standard answer in front of them.

Gu Lu frowned slightly after reading the "standard answer" of this algebra question with a glance.

"Is this question so complicated?"

Gu Lu wondered.

The solution process given by the standard answer uses nearly thirty lines of formula.

When reviewing the question, Gu Lu did this question.

It is obvious that only a dozen lines of formulas are needed to easily solve this problem.

And the amount of calculation required is not as huge as the "standard answer".

Chairman Andre glanced at everyone and said, "If there are other solutions to this question, you can present it now."

As soon as Gu Lu finished speaking, he felt Park Changqu move the chair beside him.

Then he took a piece of A4 paper and walked to Chairman Andre and said politely, "Chairman, this is another solution to this problem."

Chairman Andre nodded and waved to the assistant beside him.

The assistant took the A4 paper from Park Changqu and put the answers written by Park Changqu on the screen through a projector.

The new solution provided by Park Changqu has very long steps.

A rough count shows that there are at least more than 60 lines of formula.

Coaches from all over the world touched their chins while politely judging their heads.

"Taking through Muirhead's theorem, it's a different approach!"

"The idea is quite clear, but I think none of the students can think of using this solution."

"The process is fine, and the result is also correct, but... it's too complicated. It's twice as complicated as the standard answer."

"No, more than twice! Coach Park's solution requires too much calculation process, which not only takes a lot of time, but also is extremely prone to errors."

"But this is a brand new solution at least! After all, Zhuyu is ahead, so it's good that Coach Park can do this."

Everyone has mixed praises and complaints about the new solution proposed by Park Changqu, but overall they are recognized.

Gu Lu also read the solution given by Park Changqu from beginning to end, and accidentally pulled the corners of his mouth.

It is better not to mention the new solution to Park Changqu if you propose it.

It is hard to imagine that it is not said, it is obscure and difficult to understand, the operations are complicated, and it is extremely easy to make mistakes.

Indeed, through this method, the answer to this algebra question can be calculated.

As long as the candidates are not confused, they will never use the solution proposed by Park Changqu.

Therefore, the solution mentioned by Park Changqu is an optional existence.

But the national team leaders still give Park Changqu a lot of face.

He simply expressed his recognition of Park Changqu’s new solution and formulated the scoring details perfunctorily.

Anyway, no one will adopt it, so everyone's attitude is very casual.

Even so, Park Changqu was already very satisfied.

This is his first year to lead the Korean team to participate in IMO, and he showed his big face in front of the leaders of various countries, demonstrating his personal strength.

Park Changqu felt good about himself and returned to his seat.

When passing by Gu Lu, he gave Gu Lu a proud look.

"Team Leader Gu, my solution is not OK, right?" Park Changqu sat down and asked with a smile.

"It's okay..." After thinking for a while, Gu Lu still didn't tell the truth.

Otherwise, it would be too much of a blow to the self-esteem of the international friend in front of him.

"It turns out that the heroes have a similar view." Park Changqu was very happy to be praised by Gu Lu, the former competitor. "Although six years have passed, I have not missed the research on competition topics for a moment."

Park Changqu began to tell Gu Lu about his hardships over the past six years.

Gu Lu nodded perfunctorily while paying attention to the movements of Chairman Andre.

After Park Changqu, another demon king from Bulgaria, Bah, a leader from Bulgaria came forward and provided another solution to this algebra problem.

It is also a different way of solution, in terms of complexity, even more so than Pu Changqu's solution.

This time, it was even more straightforward. Because the solution was too biased, it was directly rejected by the team leaders.

Chairman Andrei sat in the main seat of the conference table, crossed his fingers and looked ahead calmly, "Do you have any new solutions to this question? If no new solutions are proposed, then we will go to the next step to translate these three questions."

"……Wait a mininute."

A sound rang out.

Park Changqu suddenly found Gu Lu, who was sitting next to him, slowly stood up.

"Team Leader Gu, what are you doing?" Park Changqu was puzzled.

Gu Lu shrugged and smiled, "Of course, just like you just now, I will go over and provide new solutions!"

Park Changqu: "????"

Does Gu Lu also have a new solution?

Park Changqu's expression became serious in an instant.

He has always had the idea of ​​competing with Gu Lu.

I thought there was no chance to confront each other head-on, but now, the opportunity is right in front of me.

As long as Gu Lu shows his new solution and compares it with the solution he just provided, then he will naturally know which one wins and which one loses.

Park Changqu was still very confident about the solution he had just explained.

He did not think that in addition to the standard answers, there would be someone who would write a solution that was better than his ideas.

Park Changqu looked at Gu Lu who turned around and walked towards Chairman Andrei, and was full of fighting spirit.

However, he soon realized something was wrong.

He found that Gu Lu's hands were empty.

So where did he put the solution process in his writing?

Not only Park Changqu, but many team leaders in the conference room discovered this, including Chairman Andrei.

"Where is your problem-solving process?" Chairman Andrei asked with a smile on his lips.

Gu Lu pointed to his head and curled his mouth, "It's all here."

"Do you mind if I use the computer?" Gu Lu spoke to Chairman Andre's assistant.

"Please." The assistant glanced at Chairman Andrei, nodded when he saw him, and gave up Gu Lu.

Gu Lu bent down and controlled the computer used to control the screen display in the conference room, opening a document.

With the other leaders looking at each other with curious eyes, Gu Lu hit the keyboard with both hands quickly.

After more than ten seconds.

More than a dozen lines of formulas appeared on the large screen in the conference room.

【…F(x,y,λ)=f(z,y)λφ(x,y))

(x0,y0,λ0) is the stationary point of the function F(x,y,λ)

F(x,y,z,λ)=f(z,y,x)λφ(x,y,z)=8xyzλ(x^2/a^2y^2/b^2z^2/c^2-1)

Find the partial derivative of F(x,y,z,λ) to obtain:

…………】

…………

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Chapter completed!