The Q&A room was full of people.
The third-year students who wanted to take the postgraduate entrance exam were all focused on studying.
Professor Tang Zhiwei from the University of Jin Ling was sitting next to the podium. He had put down the newspaper in his hand and was meticulously staring at the question on the draft paper. His right hand was flipping the pen cap back and forth.
Lu Zhou, who was standing next to him, knew that this small action meant that he was deep in thought.
"… Where did you get this question from?" Tang Zhiwei stared at the formula on the draft paper for a long time before he suddenly asked.
"The reference book mentioned the Fourier coefficient, so I went to the library to look up the relevant information. I found that there were several variations of the Fourier inversion theorem, as well as the applications of the variations. I tried to derive it, but I couldn't solve it," said Lu Zhou as he smiled embarrassedly.
Tang Zhiwei looked at Lu Zhou and turned his attention back to the draft paper. This time, he put down the pen cap and picked up a piece of chalk. He walked next to the blackboard and paused for a second before he reached out and started to draft on the blackboard.
Lu Zhou stared at the blackboard intently. Perhaps it was because he had done his homework in advance, he found that he could keep up with the teacher's pace.
The sound of chalk on the podium attracted the attention of the third-year students who were studying advanced mathematics. They looked up from time to time and stared blankly at the equations written on the blackboard. Then, they quickly buried their heads back down.
Emm …
What the hell is this?
Time slowly passed by. Before they knew it, the entire blackboard was filled with words.
Tang Zhiwei wrote from the upper left corner of the blackboard to the lower right corner. He stopped and turned around. He looked at Lu Zhou and asked, "Do you understand this part?"
Lu Zhou, who was staring at the blackboard seriously, nodded and said, "I understand."
Tang Zhiwei raised his eyebrows and asked, "Do you really understand?"
Lu Zhou said, "I really understand."
Tang Zhiwei didn't say anything. He picked up the blackboard eraser and wiped off the things on the blackboard. Then, he picked up the chalk and continued writing on the blackboard. His evaluation of Lu Zhou had dropped by half a point.
There were two kinds of students he hated the most in his life. One was those who gave him gifts to change their grades, and the other was those who pretended to ask questions that were beyond the syllabus.
Especially the latter, it was a pure waste of his time!
He was clearly not interested in mathematics, but he still had to pretend that he was very knowledgeable. It was disgusting! This kind of person only wants to get close to the teacher all day long. He has no idea what the purpose of studying is.
When he finished writing, there were still a few lines left. Professor Tang Zhiwei suddenly stopped and turned around to look at Lu Zhou. He suddenly smiled and said, "I've calculated this step. You should understand now, right?"
Lu Zhou nodded. "I understand … Thank you, teacher!"
Chen Yushan, who was sitting in the corner of the first row, was studying advanced mathematics. She had been secretly looking at the two people on the podium. She listened to the exchange of "Do you understand?" and "Yes." She was confused.
What do you mean you don't understand?
What are they talking about?
Chen Yushan realized that she could not understand their conversation at all. She felt hopeless about her mathematics.
Could it be … I'm actually a bad student?
When Tang Zhiwei heard Lu Zhou's answer, he smiled and gently placed the chalk on the podium. He returned to his chair and sat down. He took a sip of tea from the thermos flask and said slowly, "You really understand? Then you write down the remaining steps for me. "
You don't understand sh * t!
When I was writing, I stood there like an idiot. I didn't even take notes. If you can understand this, I'll eat this cup!
When Lu Zhou saw Professor Tang Zhiwei's expression, he instantly understood. The professor suspected that he did not listen at all and was testing him!
When Lu Zhou thought of this, he did not know whether to laugh or cry.
In all honesty, I really do understand!
He did not know why, but when Professor Tang was calculating on the blackboard, he felt like he had seen the formulas before. He felt like he had seen them before, but he could not tell where.
Could it be that the knowledge that he exchanged from the system covered this part of the knowledge? Or was it because his mathematics experience points increased and improved his understanding of mathematics?
In short, he did understand.
Lu Zhou did not know the specific reason, but it was obviously not the time to think about it. Professor Tang was still leisurely waiting for him to perform. In order to be able to publish the thesis next semester, he could not make any mistakes at this critical juncture.
Lu Zhou smiled confidently as he picked up the chalk and walked in front of the blackboard.
Professor Tang's eyebrows twitched. He thought to himself, This kid can't really write down the remaining steps right?
Impossible.
Absolutely impossible!
Even though he had completed most of the proof process, the remaining few lines of calculations were definitely not something a first-year undergraduate student could complete! Even his graduate students would have to go through his proof process from beginning to end several times before they could understand it!
But this guy didn't even take notes when he was listening to the lecture!
Time slowly passed by. The surprise in Professor Tang's heart turned into deep shock and finally into praise.
All of his doubts were like the snow on the roof of a spring day. The moment the sun shined, the ice melted.
When Lu Zhou wrote down the last symbol on the blackboard, Professor Tang stared at the blackboard and nodded with praise, "Not bad … Very well written."
The last few steps of the solution were slightly different from his thought process. It was slightly more complicated, but it was still a novel idea. This meant that not only did Lu Zhou listen to what he said, but he also integrated his own thoughts into it.
And this was the most precious aspect of it all.
Looks like I wronged him …
"It's all thanks to teacher's guidance. If it was me, I definitely wouldn't have been able to calculate this step …" said Lu Zhou as he smiled embarrassedly.
He was not lying. The calculation steps given by the system were similar to "a = b", but they did not clearly tell him why the two could be equal.
What he asked Professor Tang for was the specific proof.
"Don't be humble with me, I can see your level," said Professor Tang as he closed the lid of the vacuum flask. He then asked, "Which class are you from?"
"First-year class one, Lu Zhou," said Lu Zhou truthfully.
"Lu Zhou …" Professor Tang nodded and repeated the name a few times as if he was trying to remember this name.
So this senior's name is Lu Zhou …
Chen Yushan, who was eavesdropping in the corner, suddenly nodded. She suddenly felt like something was wrong and immediately reacted.
First, first year?!
Chen Yushan's face turned red when she thought about how she called him senior. Her entire body was like an ostrich as she banged her head on the table.
Chen Yushan wasn't the only one who was filled with shock. Several third-year seniors in the first row in the Q&A room were also dumbfounded as they looked at this junior brother of theirs. Ten thousand alpacas were running wildly in their hearts.
Are all first-year students this f * cking bad * ss?
Do they even want us to live!
"You're about to take the advanced student exam, right? How's your review going? "
"I'm almost done reviewing. I just want to read some extracurricular books," said Lu Zhou as he smiled shyly.
"Ah, I'm afraid I underestimated you by asking you to take that exam," said Tang Zhiwei as he laughed. He then joked, "How about I give you a separate exam?"
"No, teacher, I'll die!" Lu Zhou did not know whether to laugh or cry.
"Hmph, I'll die trying to solve a question? I don't believe it. " Tang Zhiwei looked at Lu Zhou and nodded with approval. "Not bad, not bad at all. I rarely praise a student like this. If you weren't a first-year student, I would've told the dean's office to transfer you to my office to do research. "
"Teacher, you're flattering me. I still have a lot of things to learn. If I really wanted to do research with you, I would only drag you down," said Lu Zhou modestly. He knew that Professor Tang was joking.
Tang Zhiwei snorted and said, "Hmph, don't be so polite with me. If you want to do research, then do it properly. Don't be so polite."
Although Lu Zhou was inexplicably criticized, he knew that Professor Tang was not really angry. Instead, Professor Tang treated him as his student and was teaching him.
When this old man was angry, he would definitely smile. For example, when he was writing on the blackboard and thought that Lu Zhou was pretending to be studying, he must have been very angry.
"Teacher, you're right, I understand."
Tang Zhiwei looked at Lu Zhou's sincere expression and nodded. His tone softened a bit as he said, "It's good to be interested in mathematics. I hope you can keep it up. Also, the direction you chose is not bad. Although it's not a popular direction, it's easy to produce results. If you have a good idea, just do it. If you don't understand something, just ask around. That's how learning is done. Maybe you'll find something that others can't. "
Professor Tang paused for a second before he continued, "Although our University of Jin Ling's mathematics department isn't that strong, our physics department is pretty good. The application of the Fourier transform is quite extensive in the fields of spectrum analysis, data compression, and orthogonal frequency division multiplexing. If you can do something in this area, I believe that when you're in your senior year, the professors in the physics department next door will definitely fight for you. "
Speaking of this, Professor Tang smiled and said, "Learn more, see more, practice more, and study more. That's all I have to say. Go think about it yourself. I won't waste your time anymore. "
"Thank you, professor! I'll remember your sincere words, "said Lu Zhou sincerely.
"Don't be so polite. What did I just tell you? If you want to thank me, just say thank you. Then get the f * ck out of here. Do you want me to walk you out? "said Tang Zhiwei with a smile.
Lu Zhou smiled and took a pen and a draft paper. He turned around and walked out the door. He even closed the door behind him.
Tang Zhiwei looked back at the blackboard. He smacked his lips and sighed. He felt emotional in his heart.
Jinling was worthy of being the ancient capital of the Six Dynasties. It was a place of great heroes.
Our University of Jin Ling is standing on the Dragon's Vein. There are really many talented people!
The undergraduate students in the audience were muddled. They looked at the dazzling calculations on the blackboard and then looked at their own exercise books. They had mixed feelings.
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