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"Next."

As soon as Xiao Yi raised his head, he saw the fat man Tang who raised his hand vigorously, blushing with excitement and having a thick neck, immediately rolled his eyes, and ignored him directly without hesitation.

"It's not fair, I don't understand...... Belch...... It's okay, I don't have any questions, students, you can ask questions. ”

Tang Fatzi was directly ignored by Xiao Yi, and he continued to protest and coax, but when he saw Xiao Yi's gaze, he immediately closed his mouth with interest.

"Students, if you have any questions, just ask, I will definitely do my best to explain what I understand to you, however, my ability may be limited, I hope you will forgive."

After forcing Tang Fatzi to shut down, Xiao Yi's face once again showed a smile, and he looked at the students in front of him, and the bunch of polite words that he had prepared were simply too lazy to say after being interrupted by Tang Fatzi, and after a simple sentence, he simply accepted the problem or challenge given by the teacher.

"This, classmate Xiao, I want to ask, about this Kramer rule......"

With Xiao Yi's encouragement, the students below, soon, some people began to actively ask questions, and the first to ask questions was a female student in the class who studied very seriously.

Her question. As soon as it came up, it looked extremely drilly. It is quite difficult, but it is precisely the blind spot of knowledge that the teacher has not explained before, and it is very difficult for ordinary people to answer.

As soon as this question came out, many students in the class began to nod, obviously, they also had such doubts in their hearts, and they also agreed with this question.

Even the teacher who stood on the sidelines and watched the play. was also moved, his eyes lit up, and he looked at Xiao Yi with a hint of expectation, as if he wanted to know very much. Can Xiao Yi answer this question?

But there are also some students who think that this girl can't help but be a person, so why ask such a difficult question as soon as she comes up, isn't it embarrassing for Xiao Yi.

In this process, everyone treats it as a game, plays it, and tries to ask some relatively simple questions to give Xiao Yi a face. Just have fun, everybody.

Xiao Yi himself, the look on his face, was also slightly stunned, he didn't expect that as soon as he came up, he would encounter such a problem.

Of course, he himself was very clear about this Kramer rule, but for a while, he really didn't seem to know how to answer her and explain it to her.

All of a sudden. He couldn't help but stand on the podium and began to ponder.

Seeing Xiao Yi standing on the stage, silent, those students immediately felt it. Xiao Yi couldn't figure out this problem and was stumped by this question.

Seeing Xiao Yi being stumped. There are no students who have the idea of ridiculing Xiao Yi as in the past, and more and more students began to secretly blame the girl who asked the question, secretly feeling that she was not interesting and deliberately made it difficult for Xiao Yi.

Even the girl herself couldn't help but regret it, and as more and more students looked at her, she became more and more uneasy.

"That, Xiao ......"

The teacher looked at Xiao Yi's expression, and also thought that Xiao Yi was stumped, as Xiao Yi had guessed before, his purpose in mentioning yì today was indeed to test him and see what kind of genius he had been, not to embarrass Xiao Yi, so seeing that Xiao Yi was stumped by this problem, although a trace of disappointment flashed in his eyes, but immediately, he moved his steps, stepped forward, and prepared to open his voice and relieve Xiao Yi.

"This classmate, this question you asked, to be honest, is a little difficult for me, so I'll briefly talk about my opinion."

However, just as he spoke, he saw Xiao Yi raise his head, look at the girl in front of him who was asking, and began to speak slowly.

"How can he answer?"

The teacher's expression was slightly stunned, the words suddenly stopped, his eyes became bright again in an instant, and his eyes stared at Xiao Yi tightly, planning to listen to what Xiao Yi would explain next.

The students below also raised their heads and looked at Xiao Yi in surprise.

Especially the students in the class who had quite good academic performance, including Zhao Yuhua, who had been looking immovable, looked at Xiao Yi with a look of surprise in their eyes, waiting for his next explanation.

"With regard to the Kramer's law, its value is mainly to study the existence and uniqueness of the solution of a system of equations and the relationship between them and its coefficients......"

Xiao Yi's thoughts were completely immersed in the question itself, and he didn't care about the reactions of the people around him at all, while sorting out those complex relationships and problems in his mind, organizing the language as simple as possible, he began to talk eloquently, and when he talked about the key points from time to time, he turned around, walked to the blackboard, and began to write.

The students below were originally just listening with a trace of curiosity, but gradually, unconsciously, their thoughts completely followed Xiao Yi, sank into the knowledge point itself, and began to think and explore with all their hearts.

And in the classroom, the only calm person, the teacher in class, listened to Xiao Yi's narration, the more he listened, the brighter his eyes became, and his eyes, gradually, were completely filled with surprise and appreciation.

He really didn't expect that Xiao Yi would be able to speak this so clearly and clearly, and be able to lead those students to understand it like this.

He thought about it seriously, if he changed his position, would he answer that student's question better than Xiao Yi?

In the end, after some thought, he had to admit that the answer was no, and what he said would definitely not be worse than Xiao Yi's, but it would never be better, probably that's what he said.

As for the method of telling, he felt that Xiao Yi's might have more advantages than the kind of narration he was used to.

“………… Therefore, to sum up, I think that although the Kramer rule has its limitations, its value and positive effect are incomparably huge, and for the mastery of this law, I am suggesting that we may do more to carry out some exercises and do more exercises, which is always the only way to learn and master a knowledge. ”

Finally, after talking about this grand and somewhat boring question, and even talking about some extended knowledge points by the way, Xiao Yi finally stopped.

The classroom was silent, and many students were still immersed in what Xiao Yi had just said.

"Smack!"

A crisp round of applause rang out.

"Teacher ......"

Xiao Yi turned his head, looked at the teacher who was full of appreciation in his eyes, and applauded vigorously, his face couldn't help but blush slightly, and after finishing speaking, he suddenly realized that he had just been too involved, too much, a little gaffe, and completely forgot to restrain himself, and even added a sentence at the end, which he had never liked very much, as if he was really a teacher, which he was afraid of.

"Bang Bang ......"

In his heart, he was terrified, and when he wanted to say a few words, express his apologies, be humble, and make amends, he was interrupted again, by the thunderous applause in the classroom.

Every student in the classroom looked at Xiao Yi in front of them, with a trace of reverence in their eyes, Xiao Yi's description just now, the psychological shock brought to them was incomprehensible, they really, profoundly, felt what a genius is, and the gap between them and Xiao Yi.

Xiao Yi's previous results, although they also brought them a huge shock, but after all, it was on paper.

And now, it's real.

Xiao Yi is the same as them, they are all freshmen, everyone is using the same textbooks, receiving the same teacher's teaching, and even he is less taught by the teacher than them.

But when a knowledge point is still vague, and he doesn't even have a clear concept, and it is difficult to solve the problem by application, he has directly eaten this knowledge point thoroughly, and also drew inferences from one another, from point to line, from all angles, to explain it to them in simple terms!

It's not genius, what is it?

"Thank you, thank you!"

Xiao Yi didn't expect that the students below would react so much, and after being stunned for a moment, he quickly turned his head, bent over and over at the students in front of him, and said a few words of thanks.

The applause lasted for nearly a minute, and then gradually stopped, which was still the teacher's wave of the teacher's hand, telling everyone that they should seize the opportunity and continue to ask questions, and everyone stopped, if he didn't wave, it might continue for a while.

Maybe it's because the question just now has solved the doubts in most people's hearts, or because the problem is more level.

Everyone gradually and unconsciously put away the utilitarian ideas before, and the people who were actively preparing to ask questions before also put away their own questions after thinking about it.

As a result, after the applause stopped, he stopped, as if he was embarrassed to ask questions.

It wasn't until the teacher stood up to encourage everyone and drove it that two or three students asked questions one after another, these are all better learning in the class, especially for this subject, which is relatively strong, and the questions asked are also relatively drilling, and even one is more difficult than the other.