Chapter 81 Not everyone is Lou Song

Although college life is not as stressful as high school.

But most of the students at Ji University are quite serious.

In addition to retaining necessary entertainment activities, I will still listen to the lectures seriously and go to the study room to study by myself after class.

What surprised Xu You's three roommates was...

Xu You never goes to the study room to study.

When I go to the library, I just borrow a variety of books and don't stay in the library too much.

Even when we occasionally take classes together.

Xu You doesn't pay too much attention to lectures. He often writes something on paper while flipping through various idle books that have little to do with the content of the class.

And every night, Xu You almost never stays up late.

When the lights go out at 11pm, Xu You will go to bed on time.

In comparison, Xu You does seem to be a little less diligent.

They all felt that they had every hope of surpassing Xu You in the final scholarship evaluation.

…

That night, after returning from the study room, Guo Haochen took out his book and continued to study a topic.

This is a question that Guo Haochen studied in the study room for almost a whole night today.

The process of writing several articles has already been written on Guo Haochen's scratch paper.

Tried many methods but no successful solution.

"Wow, this question is so difficult!"

Seeing this, Liu Rui walked over and corrected Guo Haochen:

"Come, read with me: n-an, difficult."

"No, I've been indiscriminate since I was a child, and I haven't gotten over it in more than ten years."

At this time, Liu Rui looked at the topic Guo Haochen was studying and couldn't help but frowned.

"Are you doing math problems? Why is it different from the math I learned?"

"Ah, a question about fractions. Except for choosing the direction of mathematics, there is no need to study this subject."

"I'm telling you, why can't I understand something? But didn't you score 150 in math in the college entrance examination? How can you still have math questions that stump you?"

"Can high school mathematics and college mathematics be the same? High school mathematics can only be said to be a superficial part of learning mathematics. It should be easy to get 150 points. What is really difficult is the mathematics competition. If you can win the national gold medal in the mathematics competition, then it is real.

Boss. There are also monsters that can get full marks in the math competition, that’s what’s really awesome!”

"Oh my god, it's so scary. I, who only scored 145 in math in the college entrance examination, dare not speak at all."

"Hey, do you know who in our Heqing College chose mathematics? Now, except for my roommates, I don't know many people from the same college."

"I don't know. People in our college don't go to class together, so we're not familiar with many of them."

"Okay, no, I'll ask the teacher next time."

In fact, Xu You originally wanted to take the mathematical analysis course.

Just because Xu You had already thoroughly learned this course while auditing, and this course was not a required course in the first semester of his freshman year in Xu You's major, Xu You was not in a hurry to choose it.

.

In addition to the required courses, Xu You tried his best to choose some courses that he had not studied before.

Otherwise, you really can only read other books in class.

"By the way, Xu You majored in physical science. He is the first in IPhO and he should not be bad at mathematics. Xu You, why don't you come over and take a look at this question?"

Liu Rui thought of Xu You's achievements in material competition and asked Xu You.

Liu Rui didn't have any other thoughts. He only knew that learning Wu Jing required a lot of college mathematics knowledge.

As for the specific knowledge that needs to be mastered, Liu Rui is not very clear.

"Physical science shouldn't require much mathematical knowledge. If you look at advanced mathematics, learning calculus is almost enough."

Mathematics students like Guo Haochen do not need to take advanced mathematics classes.

Compared with those courses in mathematics majors, advanced mathematics is still too simple.

"Well, let me take a look."

Now that Liu Rui called him, Xu You no longer shied away.

After all, being able to help roommates solve problems is a good thing.

Guo Haochen had some doubts in his heart.

As far as he knew, physical competition did not require much knowledge of mathematical analysis.

Although Xu You is very good at physics, it is impossible for him to learn college mathematics courses in advance.

Why come over and take a look?

Could it be...

At this time, Xu You picked up Guo Haochen's notebook and started reading.

"f(x) is continuous on [a, b], the generalized second derivative of f(x) g=lim(h→0+)(f(x+2h)-2f(x)+f(x-2h

))/4h^2 is always equal to 0, verify that f(x)=kx+m (i.e. linear function)."

After just a few glances, Xu You remembered this question.

When I lived with Lou Song, the two of them even did this problem together.

Although the process was a bit cumbersome, both of them finished it within ten minutes.

"Construct an error function and it comes out." Xu You said calmly.

Guo Haochen was stunned when he heard this.

Error function?

There is indeed such a concept.

But what you said is too broad, right?

Guo Haochen felt that Xu You must not know how to pretend to understand, and his casual remarks made people think that he was very powerful.

Although Xu You is indeed very strong in physics, it would be a bit too much to pretend to be X in front of his roommates like this.

"Then could you please help me write down the process?"

Xu You thought that Guo Haochen would understand with a little guidance.

In the past, when Xu You and Lou Song discussed topics together, they would usually be able to understand each other with just a casual word or even a look.

But obviously, Xu You overestimated Guo Haochen's understanding ability.

But after all, geniuses like Lou Song are very few in the whole of China.

Xu You can't have too high demands on others.

"Okay, then I'll write it down."

Xu You sat on the chair, picked up the pen, and started writing the process directly.

Guo Haochen didn't expect that Xu You was really going to write, so he immediately stared at the draft paper and started reading.

Gradually, Guo Haochen's expression changed from suspicion at the beginning, to surprise, and then to enlightenment.

In less than five minutes, Xu You finished writing the entire problem-solving process.

There is no pause, the whole process flows smoothly, and it also has a certain beauty unique to mathematics.

"It turns out that the error function is constructed like this. I understand, thank you, Xu You."

Guo Haochen is also a very smart child. He quickly understood Xu You's thinking and determined that this method was correct.

"Holy shit, did you actually do it? It's only been a few minutes. Haochen, how long have you been studying this question?"

"Well... I've been thinking about it for half an hour."

Guo Haochen didn't dare to tell the truth. Counting the time in the study room, this question probably bothered Guo Haochen for several hours.

"It's amazing. Xu You solved the problem that Haochen didn't solve for half an hour in five minutes. With Xu You's level, you can definitely learn mathematics."

"Actually, I've done this problem before, and the first time I did it, it didn't go so well. My math talent is average, and I can't compare with those math geniuses."

Xu You still remembers the fear of being dominated by Lou Song.

That is a terrifying genius that even Xu You cannot defeat.

"That's not right, you didn't take the math class, how could you have done this question?"
Chapter completed!