Xueba: The Knowledge I Teach, The Crit Is Returned

The next day, 7:30am.

Gu Bai asked for a few meat buns in the cafeteria, bought a bottle of mineral water, and hurried to the lecture hall 301.

He even promised Professor Luo Shifei to tutor his classmates before the final exam. Gu Bai naturally did what he said.

Of course, the most important thing is that Gu Bai can finally get teaching experience points again.

It is now approaching the end of June, most of the majors of Linhai University have been suspended, and the students are also preparing for the final exam.

From time to time on the road, I can meet some students, holding books and walking towards the library.

Gu Bai went in a different direction from them. His destination was Professor 301 in the teaching building, one of the few classrooms with air conditioning.

After arriving in classroom 301, Gu Bai pushed open the door, and there were already more than a dozen students in the mathematics department.

"Boss, you're here." After seeing Gu Bai, a student in the front row greeted Gu Bai immediately.

"One 37" Gu Bai smiled: "It's okay to call him a boss, just call him classmate Gu Bai.

"Okay, boss!

Gu Bai:

As for the title of "big guy", although it sounds cool to hear, Gu Bai still has self-awareness.

Simple.... The proof of Zhou's conjecture is not enough to make him a leader in mathematics.

For the heights that have not been reached, Gu Bai is generally reluctant to push up hard.

On the contrary, Gu Bai's status as a scholar is now real.

It can be seen from the dozen or so students who have come in the class, as well as the students who come in one after another, that they are very recognized and interested in Gu Bai's teaching.

As for how much it was because he did not pass the course at the end of the term, Gu Bai is unknown.

Came to the podium of the classroom, turned on the multimedia computer, inserted the prepared USB flash drive, and Gu Bai sat down to prepare for the lecture.

Different from the live teaching, this time Gu Bai is teaching live.

Moreover, the groups they face are different, and they are real college students.

At 8 o'clock, there were already sixty or seventy people in the classroom.

If Gu Bai remembers correctly, there are 86 students in their mathematics department, and there is no requirement for Gu Bai, a classmate who did not come.

University pays attention to freedom, and some students do not take their studies too seriously.

"Then start today's teaching."

Having said that, Gu Bai projected an advanced mathematics 2 test paper on PPt, which is what Gu Bai is going to talk about today.

His teaching method is still the same. He does the questions on the test paper, and the students listen to them below. In the process of doing the questions, he explains in detail the knowledge points and mathematical formulas involved in the questions.

"Shit... Is this the beginning? Just hard on the test paper?"

"This question doesn't look easy, our final exam won't be more difficult than this, right?

"Looking on the Internet, Gu Xueshen's teaching is very good. Many students in Yangcheng Class 3 were admitted to Qingbei because of listening to Gu Bai's class. I don't know if it's true or not.

"Whether it's true or not, it's a review in the dormitory anyway, so it's better to review with Gu Bai, a student, after all, he is a student, and he must have his own set of good study methods for these topics.

"That's right. The prover of Zhou's conjecture speaks, it's such a great honor to hear it. Gu Bai is in the same class as us, so we have this opportunity.

In the classroom, the mathematics students saw Gu Bai starting to talk about the topic, and they were also discussing in a low voice, and their hearts were full of expectations.

Looking at the students in the classroom with a smile, Gu Bai was a little nervous, but at the same time a little happy... Finally, he could gain experience points again.

[y+p(x)y+q(x)y=f(x) has three special solutions which are y1=x, y2=e to the x power, y3=e to the 2x degree, to determine the order of the equation, and find its general solution. 】

Glancing at the title, Gu Bai smiled and said: "This is a typical 'second-order equation' general solution problem, which is not very difficult.

Hearing Gu Bai said that it was not difficult, all the students in the audience snorted lightly.

Gu Bai smiled, didn't care, and explained: "For a one-variable function, if the second-order derivative of the dependent variable appears in the equation, we call it a second-order (ordinary) differential equation, and its general form is F (x,y,y,y)=0.39

"The definitions have come out, so it is obvious that this is a second-order equation. As for the general solution of the second-order equation, it is even simpler.

"....So its general solution is: x+C1(ex power-e 2x power)+C2(x-ex power).

Coming to the blackboard, Gu Bai solved the problem by dividing by two.

The title of this second-order equation is not difficult for Gu Bai, and he does not even need to calculate it at all.

However.

The students in the audience couldn't do it. They looked at the final explanation written by Gu Bai on the blackboard with a confused look, and they were a little suspicious of life.

What is the situation, this is not ready yet, it has already been done.

The general solution of the second-order equation is so vulnerable?

"Fuck....is this an instant solution?

"6666, Xueba is worthy of being a Xueba, this kind of problem can't last for 1 minute in his hands..."

"Hiss~~second solution, really second solution."

"I now finally know the distance between me and the Xueba!"

"

Immediately, some students shouted excitedly.

Even with mental preparation, knowing that Gu Bai will face these problems will definitely be very easy.

But... glanced at the question, the ability to solve it in seconds is too incredible.

Although this kind of problem is not as difficult as "Zhou's Conjecture", it should at least be thought about, but... Gu Bai did it directly without thinking.

Cow, really awesome!

At this moment, the students of the Department of Mathematics of Linhai University finally understood a fact.

The gap between academic gods and ordinary students is not the gap between full marks and 60 points, but a gap that cannot be bridged.

"This...isn't it enough to have hands?" Seeing the shocked expressions of the students in the audience, Gu Bai shook his head in confusion.

Is this subject difficult?

There is no difficulty at all.

"Then... does everyone understand?" Gu Bai asked with concern, after all, it was related to the rewards of the system.

Some students said they understood, others didn't.

Gu Bai was clear in his heart and had a certain understanding of the level of the students in the class.

Next, Gu Bai's explanation started to slow down so that all the students could understand.

Gu Bai lectured seriously, and all the 1.9 students also listened carefully.

that's it.

Time passes by every minute....

On the stage, Gu Bai explained the topic by himself.

However, all the mathematics students in the audience opened their mouths in surprise.

They looked at Gu Bai on stage in disbelief, recalled the knowledge points in their minds, and their faces were full of shock.

"Fuck... this is incredible.

35 Why can I understand all the topics that Gu Bai explained?”

As the number of topics explained has increased, some students have discovered this incredible thing.

"Yeah, this is too incredible. It's even better than what our professor Luo Shifei taught. I can understand every topic, and I don't even feel that it is difficult."

"It's awesome, it's really awesome."

"Fuck, I can understand it just once, and it's amazing."