Chapter 676

Twenty minutes later, Ling Xuan and Guo Zidong raised their hands at the same time.

"Teacher, hand in your papers."

He Longchang: "? It's only fifty minutes.

It seems that 4.5 hours have given me loneliness.

Ten minutes later, Wei kongjue, Wu pingting, Chen Cheng, Tan Jiaxu handed in their papers.

After coming out——

Chen Cheng asked, "how do you feel?"

Tan Jiaxu: "it's not difficult."

Chen Cheng: "it seems that we should be vigilant this afternoon."

Tan Xu's eyes suddenly looked cold.

The first three questions are ordinary, and the last three questions are bound to open the gap.

The two went to the canteen. Jiang Fuyue and Ling Xuan had cooked for them. After they had finished their meal, they ran to the dormitory.

Five hours before the afternoon exam, enough for them to brush another set of questions and take a nap.

……

In the office, he Longchang came back with his test paper.

Li Zhao: "so fast?"

He Longchang: "the topic is simple. I handed it in in advance."

Xiang Pengyi chuckled and pointed out: "I hope they can be so relaxed in the afternoon..."

"By the way, ask me something."

"You say."

He Longchang: "that Jiang Fuyue doesn't use draft paper to do questions?"

Li Zhao nodded: "I found it the first day."

Yuan Bentao: "in class, ask her to get up and say the answer directly. Ask her how to calculate it. She says the brain gives the answer directly."

He Longchang was speechless for a long time: "... The student really has two brushes."

In the afternoon, the examination room remained unchanged.

It's just that the difficulty of the topic is more than a little worse than that in the morning.

The first question makes everyone confused and scratching their ears.

Let Z1, Z2 and Z3 be complex numbers with three modules not greater than 1, and W1 and W2 are two roots of equation x = 0. It is proved that for J = 1, 2 and 3, there is min... Less than or equal to 1.

This problem looks like an algebra problem, but the first thing we think of is the geometry method, because that's what the teacher taught, and we have encountered similar problems in the previous quiz training.

Everyone did not think about it, so they considered it in the direction of geometry.

But the further down the steps, the more confused the expression on everyone's face——

Why is it different from usual?

Is it different from what the teacher said?

The most fatal thing is that you can't do it halfway!

Everyone was dumbfounded.

When Jiang Fuyue got the title, she compared it with the title she had done before for the first time. Sure enough, it just looked like.

In fact, it's two different things!

Because of the lack of a condition and an equation limitation, this problem has changed in essence and can only be solved by algebraic method or algebraic plus geometric method.

Pure geometry doesn't work.

Chen Cheng as like as two peas, the first reaction of the two people is also a geometric method. But before he wrote, he once thought of Jiang Fu Yue's saying: "if it is not the same, never say two questions."

Sure enough, there is an equation limit!

They dared not be careless and tried to use geometric method on the draft paper. As a result, they saw the clue in the second step, quickly turned the direction and adopted algebraic method.

Here I have to mention what Jiang Fuyue said before: "in addition to burying herself in pulling cars, we should also learn to look up at the road, because direction is more important than effort."

The first question, Jiang Fuyue, took ten minutes.

When turning the page, yuan Bentao heard the voice, couldn't help looking at her and immediately raised his eyebrows.

Is it done?

Or won't you do it? Are you going to skip it directly?

The second question, coincidentally, still looks at algebra.

It is about the inverse Cauchy inequality on convex sequences.

Originally obtained by the mathematician Alzer of country D, the later research is refined, which has attracted many mathematical experts, and the research results are more and more.

As it happens, Jiang Fuyue has read relevant papers and knows many proven conclusions.

One of the derivative theorems is just related to this problem. If it can be used directly, it can be easily solved in only three steps.

Unfortunately, IMO has requirements and can only use high school knowledge to answer the questions.

Even the theory of calculus and linear algebra can not be used directly.

It's not impossible to use it, but you must use the existing high school knowledge to prove or deduce on the spot.

Jiang Fuyue was silent. Well, the derivation process was quite cumbersome.

Ten minutes later, she asked for additional papers.

Yuan Bentao said, "what's the matter?"

Jiang Fuyue: "not enough."

Finally, yuan Bentao added a blank test paper to her on the spot.

Others: "," which question is so abnormal? Can Jiang Fuyue ask for an additional volume?

Well... It seems that I have no confidence.

Jiang Fuyue spent 20 minutes on this question.

Not only filled the original blank of the test paper, but also wrote all the added pages.

Yuan Bentao was shocked when he glanced at her when he passed by.

Does the second question require so many steps?

Not at all!

What's she doing?

The third question is the simplest. Jiang Fuyue only spent eight minutes.

So, after 38 minutes of opening exam, Jiang Fu moon raised his hands once again.

In an instant, the examination room gasped one after another.

Grass! How is it faster than the morning? I'm dying.

I just ask, is she still human?!

I want to break her brain and see what structure it is and how it is different from ordinary people.

Seeing Professor Yuan's stupefied appearance, I balanced.

……

Ling Xuan came out two hours after the exam.

When everyone was shocked by Jiang Fuyue's early submission of the paper and his mentality collapsed slightly, Ling Xuan didn't lift his head and wrote with a spirit.

After all, I've been used to it for a long time.

Others fear, I calm down, because the devil is around.

You're scared. You're scared.

Chen Cheng came out three hours and fifteen minutes after the exam, more than an hour later than Ling Xuan, but judging from the expression on his face, the completion should be quite good.

Tan Jiaxu also came out in five minutes with a smile on his face.

The four did not exchange questions, nor did they find Jiang Fuyue's answer.

Chen Cheng: "finally finished!"

Tan Jiaxu: "after a hard week, I can finally have a good sleep tonight."

"When did Guo Zidong and Wei kongjue hand in the paper?" Jiang Fuyue suddenly asked.

Both of them are in the second examination room. She doesn't know.

Chen Cheng: "I don't know. Anyway, they haven't handed it in when they talk about praise."

Jiang Fuyue slightly hooked her lips: "very good."

Tan Jiaxu and Chen Cheng look at each other, tacitly.

That night, Ling Xuan invited them to have a big meal outside the school.

He is worthy of being a young master of a rich family. He is generous and directly integrates Western food. He is also one of the three most expensive in the imperial capital.

Chen Cheng: "ah, it's nice to have money."

Tan praised: "burp! This damn copper smell."

After eating, it was dark, the street lights were dazzling and neon flashing.

The four were about to take a taxi back to school. Jiang Fuyue suddenly answered the phone. After saying hello twice, she said that she would not go back for the time being and let them go first.

Lingxuan frowned: "you're not safe alone."

"Don't worry, I have discretion."

Lingxuan knew she couldn't persuade her: "don't call too late if you have something."

"OK."

The three got on the bus and left.

Five minutes later, a black Mercedes stopped in front of Jiang Fuyue.

She opened the door and sat in the co pilot.

Xie Dingyuan: "congratulations."

Jiang Fuyue raised her eyebrows: "what do you mean?"

"IMO gold medal is in sight."

"Now even the national team list has not been announced. Would you congratulate me on winning the gold medal? Is it too early?"

"Say it in advance. I'm afraid I won't have a chance at that time."

Jiang Fuyue was slightly surprised: "what's the matter with you?"

She noticed that the man's face was tired, and the corners of his eyes and eyebrows were tired. Because his skin was white, the dark circles under his eyes were particularly obvious.

Just now on the phone, I also said that I had to see her. My attitude was very firm.

In fact, Jiang Fuyue was dissatisfied.

But now it seems

The man's Adam's apple rolled gently, and his low voice showed a trace of hoarseness: "I'll leave for F island tomorrow, at least three months, more than half a year or even longer. I may not be able to witness the moment you wear the gold medal, so congratulations in advance."

"Fzhou? Business trip?" but as far as she knows, Hanqing has no business sector there.

Xie Dingyuan shook his head.

"What is that?"

"... sorry," he couldn't say.

Jiang Fuyue naturally won't force, "OK, I'll take it."

The man smiled: "and this."

Then, like magic, he took out a bunch of roses.

"This is also sent in advance?"

"Yes."

"Good." Jiang Fuyue followed good advice, picked it up and held it in her arms.

At the moment of lowering your head, the fragrance of the flowers is full.

Suddenly there was a click——

She raised her eyes in amazement. There was another sound. This time the flash was still on.

It was Xie Dingyuan who took out his cell phone and photographed her.

"You..."

"It's beautiful. I'll send it to you."

As soon as the voice fell, Jiang Fuyue's wechat shook twice.

Actually sent it to her.

The man took his cell phone and held the steering wheel: "take you back to school."

Xie Dingyuan came in a hurry and left in a panic.

It seems that this trip is really just to say "Congratulations" to her.

Oh, and this bunch of roses.

Jiang Fuyue's eyes flashed doubts, but he didn't think much. He turned and entered the school gate.

The next day, the results were announced, and all 34 members of the intensive training team were present.

The whole classroom is chattering before the teacher comes.

Chen Cheng: "did you watch the news this morning?"

Tan Jiaxu shook his head and said, "what's the matter? Is something big happening?"

"It is said that there is an unknown virus in F continent, which has killed more than 200 people. The Taji government urgently asks for help from Huaxia and hopes to send an expert team..."