I Just Want to Be a Quiet Top Student

　　 "6 meters, I won." Shen Qi stood up from the sandpit and patted the sand.

"I was so shocked, Shen Qi." Xu Rui was puzzled. "This kind of long jump with run-up is not a standing long jump. It is difficult for ordinary high school students who have not received professional track and field training to jump above 6 meters unless they are born to bounce. It’s amazing. And you’re obviously not the latter, nor the former."

　　 Shen Qi said: "In recent months, I practice running every day."

　　 "You practice aerobic low-to-medium speed running. Does it have anything to do with the long jump?"

"Is it okay?"

"Have it?"

"There's none?"

"Stop talking, I'll accept my bet and I will invite you to eat chicken chops tonight. Mom recently died of poverty, but you can rest assured that I will not break my promise no matter how poor." Xu Rui sat on the ground next to the sandpit and opened the sports bag. The zipper took out two bottles of treasure mineral power, handed one to Shen Qi, and kept one for himself.

　　 "The track team takes care of food, drink, and distributes nutrients. Where did your money go?" Shen Qi took the drink and unscrewed the bottle, and took a few sips.

"Hehehe, I recently met a girl who is super pretty, and of course it costs money to pick up a girl." Xu Rui smiled happily, took out his mobile phone from his sports bag, and clicked on a photo for Shen Qi to observe. It was Chi Guoguo's dog abuse behavior, which proved that he was out of order.

　　 Shen Qi admired the girl's photo with great interest, and then spit out a drink with a "poof".

　　 "How about learning well, it's still a single dog, hahaha." Xu Rui burst into laughter, very crying.

　　 "Cough cough." Shen Qi was choked by the water and coughed several times.

　　 "Is it amazing by my sister, single dog?" Xu Rui swiped the phone screen, "Look, there, this, this, and this."

　　 Shen Qi can't help it anymore: "Is this your girl in this picture?"

"Yes it is."

　　 "She has to have 180 pounds, right? Super pretty?"

　　 Xu Rui asked back: "What's wrong with 180 Jin? She is a student of Shaanxi Province. She focuses on shot put. We met at the provincial U19 Games."

　　 "Xu Rui, is there a problem with your aesthetics?" Shen Qi couldn't understand.

"You have a problem with aesthetics!" Xu Rui became unhappy, and added: "I'm serious, Shen Qi, I believe in love again. I only show you the picture when you are a brother, don't make me mad. ."

　　 "Well, well, I wish you happiness, the sea is dry, the stone is rotten and the white head is not separated. Hey, Xu Rui, do you know your sister and your parents?"

　　 "Let’s keep it secret, tell them after college. So I have to win the national U19 100-meter championship and go to Tsinghua. As long as I'm sent to Tsinghua, hehe, you can do whatever you want, just like Shen Qi."

　　 "A girl changes a man's life." Shen Qi said with emotion that he was only over 130 kilograms, and it was difficult to accept a girlfriend of 180 kilograms.

　　 The two chatted for a while, to see that it was almost two o'clock, Shen Qi walked towards the teaching building, Xu Rui stayed on the playground and worked hard, for his Tsinghua dream and his shot put girl.

　　As soon as he walked downstairs to the teaching building, Shen Qi's phone vibrated, he took out his phone and took a look, hey, the editor sent a message on the button.

　　 More than a week ago, Shen Qi submitted a mathematics paper to the editorial department of "Mathematics Innovation Daily", leaving his mobile phone number and deduction number.

　　 The next day, an editor of "Mathematics Innovation News" added Shen Qi as a deduction friend and said to keep in touch.

　　 Then a week passed without any contact.

　　 Shen Qi even felt frustrated that his debut paper was clicked off, and he was preparing to write a new paper.

Fortunately, the editor sent an exciting news at this time: "Shen Qi, after preliminary review, your paper "Some Solutions for Second-Order Linear Inhomogeneous Differential Equations with Constant Coefficients" is in line with the requirements of our journal. , I would like to discuss some details of the paper in depth with you. I hope to reply."

　　 Shen Qi immediately replied: "Okay."

　　Edited greatly: "On page 7 of your paper, set y=vx and substitute it into the equation to separate the variables and obtain the solution of the variable separation and homogeneous equation."

　　 "I can't agree with the variable separation method you used for ordinary differential equations. You can use this method to solve high-math problems, but it is not rigorous enough to write thesis."

　　 "Also, on page 12, I think you misunderstood the Riccati equation. I don't understand how you transformed z=v+u^-1 to be linear?"

　　 "Of course, the flaws are not concealed. Except for the above-mentioned minor faults, the overall idea and presentation of your paper basically meets the requirements for publication."

　　 "I want to chat with you today, I hope you can make corrections. Shen Qi, what do you think?"

　　 What do I think? I have too many opinions, this is not a sentence or two that can tell you clearly.

　　 Shen Qi replied: "Please wait a moment, I will ask the school leaders for instructions, and I will reply to you later."

　　 There are still a few minutes to go to class. The first class in the afternoon is math class.

　　 Shen Qi greeted Zhang Wanbang and said that he wanted to go to the school library to check materials.

　　 Zhang Wanbang waved his hand, go, what are you doing, don’t ask me.

　　 Shen Qi came to the library, and there was only one caretaker watching the door.

You don’t need to check the materials. Shen Qi doesn’t use the materials in the school library at all. He took out his mobile phone to discuss with the editor: "Sorry, you have been waiting for a long time. Let me talk about page 7 first. I introduce new variables t and v. , In this way, equation (8) can be regarded as the parametric equation of x and y with respect to v, and then I logically calculate dy/dx and d^2y/dx^2...

"Thank you to turn to page 11 of my paper~www.readwn.com~ After substituting equation (15), I got a second-order equation with t as a function of v. There may be a little jump here, but before and after Closely related, I hope you can gain insight..."

"The discussion on page 12 and the conclusion on page 14 are also related. I fixed the undetermined constant α to eliminate the exponential factor so that v no longer appears obviously, and then transform z=dv/dt to convert the second-order equation For the first order, derive a general solution formula... Can you understand if I explain it this way?"

　　 The buckle-end editor was silent for ten minutes without speaking.

　　 Shen Qi was a little anxious: "Are you still online?"

　　 The editor finally replied. Instead of discussing academic issues this time, he asked: "Shen Qi, which college do you belong to? You did not leave your school or research institution in the thesis materials."

　　 Shen Qi: "Local."

"Journal of Mathematics Innovation" is a professional publication sponsored by the School of Mathematics, 985 University, CUHK. Although it cannot compete with the most authoritative and oldest mathematics publication in China, "Journal of Mathematics", the young "Journal of Mathematics Innovation" also It can be regarded as one of the thriving professional mathematics journals in China.

The editor of "Mathematics Innovation News" learned that Shen Qi is local, and asked: "Which local college? Are we Zhongda, China National University, China National University, Huanong, Chinese Normal University?" The editor hit all local 985 and 211 colleges and universities in one breath. Came out.

　　 Shen Qi: "I am from high school."

　　Editor: "Mr. Shen, which local high school do you teach in?"

　　 Fuck, the editor thought I was a high school math teacher? Shen Qi can't laugh or cry. In order to evaluate professional titles, high school math teachers write papers and submit them to professional journals.

　　 But I am not a teacher!

　　 Shen Qixin said, how can this be explained to the editor?