Chapter 363

Chapter 366

the fierce quarrel between the two began.

The quarrel was loud and attracted the attention of some people nearby, including Cheng Nuo and he Youjun.

A black and a white two people, directly standing on the stone steps of the activity center, red faced and quarreled.

Judging from the posture, I'm afraid there will be a fight soon if no one stops it.

Nuo is sitting on the side of the play.

Cheng Nuo is not clear about the cause of their quarrel, but judging from their conversation, it should be about the solution of a certain mathematical problem, resulting in irreconcilable differences.

Gradually, the mouth cannons can not tell the winner and loser, began to push each other up.

The other two companions with them, the old God, showed no sign of persuading.

According to the situation, it has long been common practice.

All of a sudden, which white student was pushed by the little black classmate, his body center of gravity was unstable, and he directly fell to one side.

And sitting on that side were Cheng Nuo and he Youjun.

Fortunately, Cheng Nuo is a man who wins with speed. He responds very fast and holds the fallen white classmate in his hands.

The white classmate falls in Cheng Nuo's arms and leans against Cheng Nuo's broad chest. His blue eyes seem to flash through something strange.

The white classmate looked at Cheng Nuodong's well-defined cheek and unconsciously swallowed his mouth.

Cheng Nuo behind a nameless cold, with a bold guess.

But in order to maintain the image, Cheng Nuo politely helped the white students up.

The white classmate shook hands with Cheng Nuo excitedly, "Hello, my name is zari, thank you very much for your help

Cheng Nuo said with a friendly smile, "Cheng Nuo, from China!"

The white student was more excited and put his arm around Cheng Nuo's shoulder? I've been there! Cheng, I have to say, it's a very interesting place

By the way, Cheng, which college are you from Chali was curious.

Cheng Nuo thought for a few seconds, "er You should be a math major in science school! "

"What! You are also a math major! That's great Chali, who was always excited, was excited again.

Regardless of whether Cheng Nuo agrees or not, he takes Cheng Nuo's arm and walks to the little black classmate.

With his strong body, Xiao Hei successfully defeated Chali in military force, but he was not easily convinced.

"Hey, Luke, I found a math major. Why don't we just ask him to help us judge our point of view?" Tsari said to Xiao Hei.

The little black classmate holds the arm, lightly swept Cheng Nuo one eye, "Cha Li, you are joking! What we're talking about is not an exam question, but a profound mathematical problem. "

"As for your undergraduate friend, I'm afraid it's hard to understand what we're talking about."

Chari didn't care about Xiao Hei's taunts.

Cheng Nuo can't help it.

I'm young enough to eat your rice!! Haven't you seen a talented person?

Lao Tzu was looked down upon by all kinds of people at home, but he was still like this when he was abroad!

This force, if you don't put on the whole and pretend to be beautiful, I'm sorry to call him the king.

Cheng Nuo stretched out his hand, with a light tone, and opened his mouth to Chali, "take a question?"

After a few seconds, he handed a piece of paper from his schoolbag to Cheng Nuo, and said, "this is a topic we picked up when we were shopping at the research gate. At present, there is no correct solution."

Chengnuo has heard of this website. In short, it is a favebook for researchers.

Cheng Nuo took the title and read it again.

[verification: when 2 ≤ n ≤ n, the following continuous product inequality always holds:

√ 2 √ 3 √ 4 √ 5 √n≤32^n-1√n+2≤√1+2√1+3√1+4√1+…… +(n-1) √ 1 + n]

Cheng Nuo thought that he finally knew why he had heard the words of ramanujin identity in their quarrel.

It turns out that this problem is a deformation of the ramanukin identity.

The so-called ramanukin identity is an identity named by the great mathematician lamanujin.

The formula is: 3 = √ 1 + 2 √ 1 + 3 √ 1 + 4 √ 1 + 5 √ 1 + n

There are two main methods to prove the identity, which will not be discussed here.

In a word, the topic that tsari showed Cheng Nuo was closely related to ramanujin identity.

Chali then handed Cheng Nuo another piece of paper, which was filled with mathematical formulas, "well, this is the proof step of Luke. He thinks that his proof steps are correct and there is no problem. But I think his proof process is wrong! Because of this, we quarreledBecause of this reason!

Academic researchers, even the reason for the quarrel, are so high-end atmosphere on the grade.

"So you think his step is wrong?" Cheng Nuo asked.

Chali scratched his head, "I don't know, by feeling."

Cheng Nuo:

Big brother, you cheat!

Cheng Nuo was speechless for a few seconds, took the A4 paper which was full of steps, and browsed it line by line.

There are not many formulas, but only one page. Three minutes, Cheng Nuo finished.

After watching it, Cheng Nuo looks up and looks at the eyes of shangchali.

"How about it?" Zari asked, as if he had great expectations for the Chinese student he had never met.

Cheng Nuo smiles and reaches out, "pen

"Here, here, and here, the steps are all wrong!" Cheng Nuo explained the reasons for the mistake in detail.

This question should be regarded as a difficult level for most doctoral students.

According to their age, Charlie and the little black student should still be studying for a master's degree. Even if they are students of MIT, they can't easily cross levels.

Such difficult questions still embarrass them.

Xiao Hei, who is pointed out by Cheng Nuo, looks ashamed, but is still tough.

His face flushed, and his fingers trembled at Cheng Nuo, "aren't you very strong? I'll give you the pen. You can write it!"

Cheng Nuo shrugs with a smile. "No problem!"

That's what I'm waiting for, Xiao Hei!

I didn't expect that the first stop would happen here.

It's destiny. Let it be.

Holding the pen, Cheng Nuo Shua starts.

On the left side of the proof, if 3 ≤ K ≤ n, it can be obtained from Bernoulli's inequality: 2 * (32) ^ K-2 = 2 * (1 + 12) ^ K-2 > 2 * (1 + K-22) = K. that is, K & & 2 * (32) ^ K-2, k = 3, 4 n. So, 2 √ 3 √ 4 √ 5 √ √n≤√2√2*(32)√2*(32)^2√2*(32)^3…… 】

on the right side of the syndrome, because k = √ 1 + (k-1) (K + 1), k = 3, 4, 5 So 3 = √ 1 + 2 * 4 √ 1 + 2 * √ 1 + 3 * 5 = √ 1 + 2 √ 1 + 3 * 6 = =√1+2√1+3√1+4√1+…… +(n-1)√1-n(n-2)…… 】

………………

………………

PS: are you about to start school?

www.novelhold.com , the fastest update of the webnovel!