Jia Yidu walked into the classroom, found a seat back and was about to sit down.

"Jiayi, why are you here to attend class? It's really rare."

Before Jiayi could sit down, he saw someone squeezed over and sat down next to him. He turned around and saw that it was Trudy.

"I didn't seem to have been to class when you say that. I haven't been to class for only about half a month, and I just haven't taken the calculus course. I have also taken other courses one after another."

Trudy looked up and down Jiayi: "Didn't you have long enough? But you really don't have to come to class anymore."

Jiayi thought about it carefully and found that he rarely came to class recently. Today, he was a little dizzy because he designed the balance module of the flight skateboard. He was preparing to change his mind and had nothing to do, so he came to class to relax.

At this time, the class time had come, and professor Naiwang Linna came in with a thick textbook in his hand.

Linna looked around the classroom and saw Jiayi sitting behind the classroom. She smiled and nodded at Jiayi, saying, "It turns out that Jiayi, you are here. Are you here for guidance?"

Jiayi was a little embarrassed, and folded his hands together and bowed slightly to express his begging for mercy.

Linna shook her head slightly, put down the book in her hand, and said, "I'm not talking about you, I'm talking about you."

As he said that, he knocked on the table and pointed his fingers around: "Look at you so happy, but if you can have half of Jiayi, forget it, cut half of it, I will cut half of it, how much is left, right, one-sixteenth, if you can have one-sixteenth level of Jiayi, I will go to the church of faith. During class, I can't even solve the simple linear differential equation, which is simply... I don't know what to say."

Originally, the other students below said that Jiayi was still watching jokes when he saw Lin Na, but now he couldn't laugh. They lowered their heads one after another, not daring to look at Lin Na on the podium.

Linna said as she excitedly tapped the table with her fingers: "Is this more difficult than ancient magic texts? Is it harder to remember than obscure magic arrays? This doesn't require memorization. Such a simple formula and deduction, just spend a little effort and calculate it. For example, in ancient magic texts, you remember one, can you help you remember the second one? If you learn the first spell structure, can you learn the second one immediately? But calculus is different. As long as you master the rules, you can calculate the first question, and you will calculate the second question, and everything can be calculated through calculation."

"Teaching ancient magic script was a great beauty. Can you compare with her? This example is really not good." Jiayi thought to himself, but he still looked like he listened carefully and was humbly taught, although he was not talking about it at all.

After training his students, Linna began class.

Linna was teaching the lesson above, and Jiayi was a little absent-minded when listening below, but slowly, he was attracted by Linna's course. Today, he actually started to talk about partial differential equations.

This is not the first time that Jiayi has taken Linna's courses, and he also has some understanding of Linna's style. I have to say that Linna's level is still very good. Jiayi feels that because of his higher mathematics development in his previous life, he has gained some advantage in learning medicine. However, in terms of solid foundation, he himself may not be able to compare with Linna, so Jiayi can still get a lot of inspiration in Linna's class.

However, although Linna is good at learning, she is not outstanding as a teacher. His class progress is very chaotic and does not have a complete framework. Or even if there is one, he often thinks about where to say it.

This has high requirements for his students. Those who can keep up with it will be very fast in their learning. Just listen to the key points and pay attention to it. However, people like Trudy will feel very sad and often feel like they are listening to the heavenly books.

In this case, you can only learn by yourself. The college’s requirements for teachers are not to talk nonsense. Just be able to have a good level, but there is really no requirement for teaching quality.

Linna took a while and noticed Jiayi again. In the classroom, there was no confusion on his face.

He finished talking about the common differential equations two days ago, and today he started talking about partial differentials. Those who have no loops can only learn in advance.

He reached out and pointed at Jiayi and said to the others: "Looking at you, it's like I'm talking about the same language as you. Let Jiayi talk about it. Perhaps he is close to you, which will make it easier for you to understand."

As he said that, he greeted Jia as soon as he came up.

Jiayi was not nervous either. This was not the first time. When the school started, Jiayi often came to class and was pulled up several times by Lin Na. If it weren't for solving problems, explaining ideas, or even giving half of the classes.

After taking the stage, Jia Yi signaled to Linna and said, "I don't know how to talk about it either, so I will give you a question and explain the ideas to everyone."

He originally wanted to choose a question from Linna's textbook, but suddenly he remembered the skateboard flight control and balance problems he was dealing with. He thought about it, ignored several parameters, simplified the conditions, and idealized them, and came up as the question.

"There is a downward amount of acceleration, and the normalized n-system gravity acceleration is rotated to the b-system by left multiplying the rotation matrix R, that is, k is the normalized rotation matrix R(b-e). Finally, we calculate the downward deviation based on this."

After finishing writing Jiayi's title, he looked down and found that everyone's expressions were even more confused, and none of them had a relaxed expression.

When Trudy went up to Jiayi, she thought that Jiayi could make it clearer. The previous few times when Jiayi came on stage, she had clear ideas about solving problems and teaching, and was very detailed, and would not omit some steps that she seemed unnecessary. So in Trudy's eyes, Jiayi's teaching level was actually higher.

But after some of this question came out, he felt that it was a bit difficult for him to even understand the question. What is he talking about?

Jiayi didn't have the idea of ​​finding someone to try to solve the problem, so he started to solve the problem directly: "We first construct the target pose rotation matrix, and then obtain the rotation matrix D of the current state by controlling the quaternion, take the Z-axis vector in the two matrices, namely YAW-axis... Calculate the weight of yaw... Construct the e_R_cp antisymmetric matrix, calculate the error of yaw, and further update the error value e..."

Jiayi said it quickly and wrote it quickly. At this time, the students below only felt that they could not keep up with Jiayi's ideas at all. If they were a little delayed, they could not keep up with the progress at all. It was completely different from the previous problem-solving problem-solving and trying to understand it by classmates. Almost all people think that Jiayi had changed to another person. After all, this is the magic world, and it is very simple to create an identical person.

Jiayi Shuai Shuai finished solving the problem, but he felt that he was not satisfied. He continued to solve it: "Get the current angular velocity value r, calculate the angular velocity difference rates_err, calculate the diagonal velocity difference rates_err, consider the ethereal compensation, and finally get the value needed to adjust it."

Seeing that Jiayi had finished solving the problem, Lin Na hurriedly came up to stop Jiayi, invited him down, and said, "You should write down this question. If you can solve this question independently, then you will be at least in the fourth grade and will not be far from becoming a teacher."

Linna doubted whether Jiayi was intentional. Although he was a bit imaginative in class, at least he would not be too far off. However, Jiayi's questions and problem-solving ideas this time were a bit too long, and it felt like he was taking revenge on himself and always pulled him up to give a lecture.

However, Jiayi didn't have the energy to do it at this time. He was like the others, copying the topic he just wrote and his ideas for solving the problem on his notes. At the same time, he also wrote down some of his just experiences.
Chapter completed!