I kidnapped an alien civilization

An excellent university must have excellent students, and excellent students must have the quality of diligence.

It was already ten o'clock in the evening, and the library was still brightly lit. Li Mo saw a gray-haired classmate who was only in his 20s next to him, yawning and searching for papers. In his heart, he had some new understanding of this university that all high school students in the country dreamed of entering.

Back in the dormitory, I pushed open the door, only to hear the fat man calling loudly: "No way, brother, I can't have blackouts with you tonight. There will be old man Guo's linear algebra class tomorrow morning, and other teachers can still be absent." One or two classes, but the old man won’t be absent from class.”

Only then did Li Mo remember that he hadn't got the timetable yet, so he asked, "Fatty, where is the linear algebra class tomorrow?"

The fat man checked his timetable and said: "Lecture Room 202. Don't be late tomorrow. You don't know that old man Guo is very good. Last time I was late for 10 minutes and was sued by him to the Student Affairs Office." .”

Wang Yang next to him poked his head out from his computer, and jokingly said, "It's not that you played the black game too late that night. I called you several times in the morning and didn't wake you up."

The fat man was a little annoyed and said: "Can a college student be late if he is late?" He turned around and climbed onto the bed, and shouted: "Forest, turn off the lights and go to sleep." It seemed that he was quite frightened by the old man Guo.

At 6 o'clock in the morning, Li Mo went out for a run out of habit, and he appeared next to the sports field wearing a dark blue sportswear. Yanda University in the early morning is a busy Yanda University, and many students are already exercising on the sports field.

Li Mo calmed down and started to run around the sports field. This track was much better than that of Mengcheng No. 1 High School.

Step by step, Li Mo's attention completely shifted to the 5 meters in front of him. His spirit began to empty, the expectations of relatives and friends, the crisis of the Pajero people, the mystery of the endless void, and Mr. Wang's house were all left behind. Li Mo only had his own breathing and footsteps in his consciousness.

One lap, two laps, three laps. Li Mo has forgotten everything.

Slowly, the students doing exercises on the playground stopped to look at the blue figure running hard on the track.

Eleven laps, twelve laps, thirteen laps. The students who had already had good things around began to count how many laps the blue figure had run.

A muscular man with a barbell on the sidelines said loudly: "Is this guy from our physical education department? He can run so well, and his speed hasn't lost at all after so many laps. He looks like a professional runner. Do you know him?" ?”

The little man next to him who was doing stretching replied: "I don't know, I ran behind him just now, and he has already run 20 laps now. Really awesome!"

All the people on the sidelines were quietly looking at the blue figure on the track, and they wanted to know how many laps the blue figure could run.

Li Mo ran step by step, and he felt that the surroundings gradually quieted down. There were a few runners around me just now, but they are all gone now. He looked back and found that everyone was watching him from a distance.

He slowed down and started running off the court.

This is the muscular man who ran up to Li Mo and asked loudly: "Brother, are you from the Department of Physical Education? Why don't I know you? Are you interested in joining our long-distance running team?"

Li Mo wiped his sweat with a towel and replied: "I'm from the Department of Mathematics, and I'm not interested in the long-distance running team. I'm sorry I'm going to be late." He ran away after speaking.

I saw the muscular man behind him waving the towel in his hand and shouting: "My name is Wang Meng. If you want to join our long-distance running team, you can come to the Department of Physical Education and find me."

Li Mo came to the lecture theater according to the time, the classroom was already full of people, he chose a back seat to sit down and began to read a book.

The bell rang, and a thin old man wearing cloth shoes stepped onto the podium. It seemed that this was the "Old Man Guo" that the fat man called.

Teacher Guo opened the courseware and said in a loud voice that did not match his age: "Let's start the class now. Today we are going to talk about the operations of matrices and their operation rules. In mathematics, a matrix (Matrix) is a matrix arranged in a rectangular array. The set of complex or real numbers first came from the square matrix formed by the coefficients and constants of the equation system. This concept was first proposed by Kelly, a British mathematician in the 19th century. Matrix is ​​a common tool in advanced algebra, and is also common in statistical analysis, etc. in Applied Mathematics.”

"Okay, that's the end of this class. I think the students have already learned a little about the matrix through my narration. Next, I will name a few students to answer some questions for me." Question time for the times.

Teacher Guo looked around the lecture hall and said slowly, "For the students I have named, if they answer correctly, they will add 5 points to their final grades. If they answer incorrectly, their final grades will be subtracted by 5 points."

"Wang Qing" Teacher Guo clicked on the first name, and he asked, "What is the matrix?"

A girl with glasses slowly stood up and said, "A matrix is ​​a set of complex or real numbers arranged in a rectangular array."

Teacher Guo waved his hand and said, "Sit down."

"Chen Fengfan" Teacher Guo clicked on the second name, "Can you answer what is a matrix?"

This time it was a boy, he hesitated and replied: "The matrix is ​​born in response to the linear equation, and the coefficients and constants of the linear equation system are formed into a matrix."

Teacher Guo shook his head and said, "It's still about book knowledge, please sit down. Next time, whichever student will use book knowledge to answer, 5 points will be directly deducted from the final grade."

He flipped through the roster in his hand and shouted: "Li Mo".

No one stood up.

Teacher Guo raised his voice and shouted loudly: "Is Li Mo here?"

Li Mo was sitting in the back row reading his book, he was not interested in what Teacher Guo said, when he heard his name being called, he stood up with a confused face.

Teacher Guo looked at the confused Li Mo, shook his head and said, "Please answer what the matrix is. If you answer wrong, I will mark you as absent from this class."

Li Mo rationalized his thoughts and replied loudly: "The essence of a matrix is ​​a linear equation, and the two are in a one-to-one correspondence."

When Teacher Guo on the podium heard this, her anger subsided, she nodded and said, "That's right, I have some insights, everyone should be like this classmate, and you can't just copy the textbook."

Li Mo pondered for a moment and then said: "The essential meaning of the matrix: given the linear transformation, the matrix formed by its coefficients is also determined. There is a one-to-one correspondence between the linear transformation and the matrix. It is precisely because the matrix and There is a one-to-one correspondence between linear transformations, so matrices can be used to study linear transformations, and linear transformations can also be used to explain the meaning of matrices."

Teacher Guo said with bright eyes, "Which class are you in?"

Li Mo replied calmly: "Teacher, I am in Class 1 of Senior Mathematics. My name is Li Mo."

As soon as he finished speaking, he saw a girl with a ponytail stand up, she said with a puzzled expression: "Mr. Guo, I am Ying Sasa, the monitor of Class 1 of Senior Mathematics. Li Mo is not in our class. There is no one in our class." A classmate named Li Mo."

Li Mo looked at the girl with ponytails, and said, "I'm an auditor student who just entered school. I just registered yesterday, and I haven't had time to get to know my classmates."

At this time, a fat man's voice came from a corner: "Li Mo is from our senior mathematics class, and he shares a dormitory with me." The fat man called me and saw that everyone was looking at him, so he hurriedly retracted his head under the table.

Teacher Guo on the podium clapped his hands and said: "I just said, my baby roster can't be wrong, right? Li Mo is in the first class of senior mathematics. At the end of the semester, I will add 5 points to my usual grades, and class will be dismissed." He put the roster on Into the folder, straight out.

"Hi, I'm Ying Sasha, the monitor of Class 1 of Senior Mathematics. I was the one who was sorry just now. I didn't know there was a freshman in our class." Li Mo was packing his books and preparing to leave when he looked up and saw the girl with ponytail standing on him with her right hand outstretched. before.

Li Mo also stretched out his hand and shook her, feeling very hot and soft.

He said calmly, "It's okay, I just entered the school yesterday, and I haven't had time to get to know my classmates yet."

"Let me take some time to hold a welcome party for you, and introduce you to the students in our class." Ying Sasa sent out the invitation.

"Okay, I'll trouble the class monitor to arrange a time." Li Mo is actually not interested in communicating with his classmates, but he knows that this is a part of college life, which can better allow him to integrate into this big group. Added WeChat.