Xueba: The knowledge I taught will be returned by crit

The next day, 7:30 a.m.

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

Unexpectedly promised Professor Luo Shifei to tutor the 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.

Now near the end of June, most majors at Linhai University have been closed, and students are preparing for final exams.

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

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

After coming to classroom 301, Gu Bai pushed open the door, and at this time there were already more than a dozen students in the mathematics department class inside.

“Big guy, you’re here.” After seeing Gu Bai, a student in the front row immediately greeted Gu Bai. “Two Seven Seven” Gu Bai smiled: “Forget about the title of the big guy, just call it Gu Bai.” ”

“Okay, big guy!”

Gu Bai: “…..”

For the title of big guy, although it sounds quite cool, Gu Bai is still self-aware.

Simplicity…. The proof of Zhou’s conjecture is not enough to make him a big man in mathematics.

For the height that has not been reached, Gu Bai is generally unwilling to force it up.

But now Gu Bai Xueba’s identity is indeed real.

From the dozen or so students who had already arrived in the class, as well as the students who came in through the door one after another, it could be seen that they were still very recognized and interested in Gu Bai’s teaching.

As for how many are because they don’t hang up for the end of the period, Gu Bai doesn’t know.

Came to the podium of the classroom, turned on the multimedia computer, plugged the prepared U in, and Gu Bai sat down to prepare before teaching.

Unlike live teaching, this time Gu Bai is teaching on the spot.

Moreover, the group facing is different, it is a real college student.

By 8 o’clock, there were already sixty or seventy people sitting in the classroom.

If Gu Bai remembered correctly, there were a total of 86 people in their mathematics department, and Gu Bai did not force Gu Bai who did not come.

Universities are about freedom, and some students don’t take learning too seriously.

“Then start teaching today.”

Saying that, Gu Bai projected a Higher Mathematics 2 test paper on the 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, the students listen below, and in the process of doing the questions, explain in detail the knowledge points and mathematical formulas involved in the questions.

“Groove… Is this the beginning? Direct hard hard test paper? ”

“This topic doesn’t look simple, our final exam won’t be more difficult than this, right?”

“Look at the Internet, Gu Xueshen taught very well, and many students in Yangcheng Class 3 were admitted to Qingbei because they listened to Gu Bai’s class, and they didn’t know if it was really fake?”

“Even if he is really fake, he is also reviewing in the dormitory anyway, it is better to review with Gu Bai Xueshen, after all, he is a Xueshen and must have his own set of good learning methods for these topics.”

“That’s right. The prover of the Zhou conjecture spoke, what a privilege it was to hear. It was only because Gu Bai was in a class with us that he had this opportunity. ”

“……”

In the classroom, the students of the mathematics department saw Gu Bai start to speak, and they also talked in a low voice, and their hearts were full of expectation.

Looking at the students in the classroom with a smile, Gu Bai was a little nervous, and at the same time a little happy… Finally, experience points can be gained again.

[y+p(x)y+q(x)yf(x) has three special solutions, namely ylx, y2e’s x power, y3e’s 2x degree, judge its equations, and find its general solution. 】

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

Gu Bai smiled, did not care, and explained: “For a univariate function, if the second derivative of the dependent variable appears in the equation, we are called a second-order (constant) differential equation, and its general form is F(x,yy,y)0. ”

“The definitions are out, so obviously this is a second-order equation, and as for solving the second-order equation, it is simpler.”

“…. So the general solution is: x+C1 (ex power -e to the power of 2x) + C2 (x-ex power). ”

Before coming to the blackboard, Gu Bai solved this topic by dividing it by two.

The topic of this second-order equation was not difficult for Gu Bai, and he didn’t even need to calculate it at all, and he directly calculated it.

However.

The students in the audience couldn’t, they looked at the ultimatum written by Gu Bai on the blackboard with a confused look, and they were a little skeptical of life.

What’s the situation, this is not ready, it has already been done. (Read violent novels, just go to Feilu Fiction Network!) ）

Second-order equations to solve general solutions, so vulnerable?

“Groove…. Is this a second solution? ”

“6666, Xueba is worthy of being a Xueba, this kind of topic in his hands, he can’t last for more than 1 minute 0…”

“Hiss~~ second solution, really second solution.”

“I finally know the distance between me and Xueba now!”

“……”

Immediately, some students shouted excitedly.

Even if he is mentally prepared, even if he knows that Gu Bai will definitely be very relaxed in facing these topics.

But… With a glance at the topic, the ability to solve it directly in seconds is also incredible.

Cow, really awesome!

At this moment, the students of the mathematics department of Lin Hai University finally understood a fact.

The gap between Xueshen and ordinary students is not a gap between full marks and 60 points, but a gap that cannot be crossed.

“This… Isn’t it okay to have hands? Seeing the shocked looks of the students in the audience, Gu Bai shook his head in bewilderment.

Is this a difficult question?

It’s not difficult at all.

“That… Does everyone understand? Then, Gu Bai asked with concern, after all, this is about the reward of the system.

Some students said they understood, while others did not.

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

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

Gu Bai lectured seriously, and some students of 0.8 also listened carefully.

That’s it.

Time passes minute by minute….

On the stage, Gu Bai explained the topic with his own care.

And all the mathematics students in the audience had opened their mouths in surprise at this time.

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

“Groove…. It’s also incredible. “

“Why can I understand the topics explained by Gu Bai?”

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

“yes, that’s incredible. It is even better than what our Professor Luo Shifei said, I can understand every topic, and even feel that it is not difficult. ”

“Awesome, real cow.”

“Lying groove, I can understand it once, and it’s too godly.”

Người mua: ʕ˖͜͡˖ʔ ? ấ ? 亗