Chapter 188 There Is Nothing Shameful About Answering Questions

At around 10 o'clock in the evening, Wu Bin returned to the dormitory and found that the other three people in the dormitory were leaning on the desk writing furiously.

"Oh, it's rare." Wu Bin found it rare to see three people working together.

Hearing Wu Bin's teasing tone, Li Yan raised his head and said, "It's rare that you come back so early. Is that the paper on graphene finished?"

Wu Bin: "You have guessed this, we just finished it."

"Ah!!! Wu Shen, please use your magical powers. I'm so miserable." Chen Anzhi, who was sitting next to Li Yan, dropped his pen with a look of despair on his face.

"What's going on?" Wu Bin was a little confused.

"I was almost killed by wire generation and electromagnetics. I originally thought that a little competition would make learning easier." Chen Anzhi scratched his hair, but after thinking about it, he stopped with distress, and looked pitifully towards Wu Bin: "Boss, can I borrow your notes for a look? I can help you wash your socks!"

"I've contracted the underwear! Let me take a look, too? It would be better if you could give me some advice." Li Boxin couldn't help shouting at the side.

"Alas~" Wu Bin sighed, walked to Chen Zhian and glanced at the questions he was working on.

"On your knees?"

"Wu Shen Yingming!"

Picking up a pen, Wu Bin tapped on the matrix question and said: "First use row transformation, and then use the inverse matrix. After knowing that the matrix determinant is equal to -1, calculate the adjoint matrix. Here, for the element numbered mn, cross out The m-th row and n-th column of the original array..."

"Wait, wait, let me digest it first." Chen Zhian couldn't help but feel his face getting a little hot as he spoke. They were both freshmen, so the gap was too big...

"Hmm..." Wu Bin snorted meaningfully and asked, "Do you think the line agent is here to kill you?"

At this time, Li Boxin responded: "Not only that, but also the kind that doesn't give you a good time, all kinds of torture."

Chen Zhian also nodded immediately in agreement.

Wu Bin: "To be honest, I think Teacher Luo's class is pretty good. It not only talks about knowledge points and mathematical ideas, but also covers practical applications. Could it be that you two didn't listen carefully?"

"Conscience of heaven and earth, I don't even dare to blink my eyes when I'm a substitute teacher, okay?" Chen Zhi'an said with a big sigh, "Well, I learned high school mathematics quite easily, but this college mathematics makes me feel like I'm reading It’s like a fake high school, completely confusing.”

Wu Bin: "Normally, a big difference between high school mathematics and college mathematics is that college mathematics is basically starting to move in the direction of modern mathematics, while modern mathematics is developing in an abstract direction."

Li Boxin: "I'm about to have a convulsion..."

Ignoring Li Boxin's complaints, Wu Bin continued: "The advantage of abstraction is that the more abstract the tool, the wider its scope of application. The price is that it is more difficult to start."

"Mathematics is not like physics. Many things can be understood through concrete things. If you want to learn mathematics well, you must develop a mathematical feeling for abstract things. Do you understand the mathematical feeling?"

"I don't understand." Chen Zhian shook his head.

"Hey, do more exercises. This feeling is difficult to establish without doing a certain amount of exercises."

Chen Zhian: "Isn't that what I'm doing...Wu Shen, can you give me any tips?"

"You should do more questions first and then talk."

"You have to have a goal when doing the questions...I'm so panicked right now. I don't want to fail my freshman year..."

Listening to Chen Zhian's tone of voice that was about to cry, Wu Bin thought for a while and said: "Tsk, if you really want to say something, for example, for a question, if you draw an intuitive image or think about it in your mind, the conclusion you feel you need to prove will come out. Yes, have you ever felt this way?"

"Hey, I feel like this all the time!" Li Boxin on the side looked very excited, as if he had been poked in the G-spot.

"But you can't write it in strict mathematical logic, right?"

"Yes...yes." Li Boxin said immediately.

"Then it means you still can't do this kind of question. Take the relatively simple intermediate value theorem of continuous functions in calculus as an example. If a question asks you to prove this theorem, you may draw a picture and feel that there is a function value greater than 0. If there is a function value less than 0, then this curve is continuous and will definitely pass through the x-axis, but I don’t know how to express it..."

Listening to Wu Bin's concise and clear learning ideas, Li Boxin and Chen Zhi'an nodded frequently, flashing an expression of "I see" from time to time.

"So, I think that for mathematics courses, such as finding a limit in calculus, you may sometimes feel that it is equal to 1 with your eyes, but if you are asked to prove it using strict language, you will not be able to prove it. This is actually not the same."

"Because the purpose of this question is to test your use of mathematical language to demonstrate. If you cannot prove it, it means that you have not met the standard in this aspect."

Looking at the two people's thoughtful expressions, Wu Bin concluded.

"I just want to express one idea. Only when you can do the questions can you really understand. It is never a shame to answer the questions."

"Ahem...did I show it so obviously?" Chen Zhian blushed.

Being able to get into HKUST, Chen Zhian is still very confident in his academic ability, so he always feels that answering questions is a very low behavior. Even if he can't keep up with the progress of the class, he still thinks that it may be his learning method or thinking. problem.

Now that Wu Bin pointed it out to his face, it was a bit embarrassing.

Li Boxin on the other side had already gone to answer questions silently.

"What about you, are you also doing homework in the liver major class?" After instructing the two of them, Wu Bin looked back at Li Yan.

"No, I'm writing a manuscript, and I'm going to criticize a civil servant on Weibo, oh no, it's public knowledge."

"You are really leisurely..."

"It's not that I'm idle. I feel uncomfortable watching this bitch jumping up and down. She's morally kidnapped at every turn. Here, let me take a look." Li Yan said and stretched out the phone in front of Wu Bin.

Wu Bin took a look and found that he was arguing about the stock market.

"You have done research on stocks!?" Wu Bin was shocked.

"I understand a little bit, but it's not stocks that are being ripped off. It's a 2B public intellectual who insists on elevating the stock market crash to the level of national instability, and there are a lot of people who are following him, it's just ridiculous."

"Isn't this the basic operation of Weibo?" Wu Bin said and pushed the phone back.

When he first started using Weibo, he came across a hot search that someone called Yang Zhenning. The above listed some examples of Yang's status in the physics world, as well as what contributions he has made and what awards he has won.

At that time, Wu Bin was amazed that one person could make significant contributions to statistical physics (Li Yang's theorem, Yang Baxter equation), particle physics (parity non-conservation) and field theory (Yang Mills) at the same time. .