The Black Technology Era of Xueba

Xiao Ming stayed up all night to read novels yesterday, and he did something indescribable in the early morning to waste his energy. In addition, he didn't eat breakfast in the morning, so he walked up in a wretched manner, like a zombie.

Xiao Ming, what are you doing! Teacher Fang was startled.

I just died suddenly and came back to life. I'm not physically strong. Xiao Ming only felt that after walking a few steps, he would be dizzy and fall to the ground. He approached Teacher Fang step by step, put his hand on Teacher Fang's shoulder, and panted heavily.

Damn body, can't function at all! Xiao Ming cursed in a low voice.

Xiao Ming's performance once again surprised the students.

What is Xiao Ming going to do?

He...he got close to Teacher Fang!

Wow, Xiao Ming is only twenty centimeters away from Teacher Fang! What is he going to do! Isn't the teacher interested in the other party!

Boom?

Stop joking, Mr. Fang is fifty-nine this year and will retire next year!

Xiao...Xiao Ming, what are you doing! Teacher Fang was frightened by Xiao Ming's pale face.

Talk about the topic. Xiao Ming's voice came out of his throat.

This kid is sleepwalking! He's going up to lecture? Math?

This kid happened to be right in the biology class just now. He doesn't think he can do this function problem, right? What is he doing crazy?

Zheng Xuanyu, who has been smiling all the time, frowned slightly. What she disliked the most were students who disturbed the discipline of the classroom.

Xiao Ming ignored everyone's eyes, took the chalk in Teacher Fang's hand and walked to the blackboard.

He adjusted his breath, and while writing on the blackboard, he said, This problem involves the knowledge points of derivatives and quadratic functions. To solve this kind of problem requires mastering the idea of ​​classification. First, we need to find the derivation.

Xiao Ming wrote down the derivation method of f(x) on the blackboard.

Derivation is the simplest and most basic step in a function problem. Xiao Ming, a student scumbag, can write it, which is not beyond the expectations of the students.

At this step, Xiao Ming did not gain surprise.

Teacher Fang was going to drive Xiao Ming out, but it was rare that Xiao Ming, who was usually taciturn and only got 34 marks in the math test, took the initiative to lecture on the topic. Teacher Fang still patiently let Xiao Ming continue.

Let's next, let δ=a^2-4 be less than or equal to 0, that is, when -2 is less than or equal to a and less than or equal to 2, g(x) has no real root on (0, + infinity)...

Xiao Ming wrote in detail on the blackboard step by step and explained.

Zheng Xuanyu's brows stretched out, Xiao Ming's blackboard writing was beautiful and the same as the biology class just now, mainly because his ideas were clear and detailed, and it didn't look like he was here to make trouble.

As the study committee member of the class, Zheng Xuanyu expressed her welcome and appreciation as long as she studied diligently, regardless of whether she had good grades or poor grades.

Teacher Fang looked at Xiao Ming's problem-solving steps and nodded again and again, completely correct! More detailed than the reference answer.

Xiao Ming said: So, when a is less than or equal to 2, f(x) decreases monotonically at (0, + infinity); when a is greater than or equal to 2, f(x) increases monotonically on XXX and decreases monotonically on XXX .

Xiao Ming finished the first sub-question of this question smoothly, although it was not too difficult, but at the level of the third middle and third class, two-thirds of the class could not do it.

The students who were willing to listen listened attentively and wrote down the steps on their exam papers. The scumbags who were unwilling to listen and voluntarily gave up the last big question also looked at Xiao Ming in amazement.

The deputy monitor with the most stable grades in the class, Xiao Ming, actually spoke on the podium about the last big question of the monthly exam!

For math multiple-choice questions, only three long and one short, choose the shortest, three short and one long, choose the longest, fill in the blank questions only fill in 0, 1 or -1, and answer the questions only write solution, colon and then copy the questions. Xiao Ming was actually explaining the last big question.

The scumbags are dizzy when they see it, don't say they don't take the answer directly, even if they take the answer and read it,

Some formulas they can't read clearly.

Wacha! Xiao Ming is taking medicine!

What's going on with this kid today, the biology class is expressing himself, and the math class is expressing himself, and he seems to be able to do everything!

Xiao Ming slept all morning, and his whole body changed after he woke up!

Xiao Ming's face has been bad these days. It seems that he has a serious lack of sleep. It won't be this kid's transformation. Go home and stay up late to read and study!

Impossible! I understand that this kid has no other hobbies than sleeping and reading novels. Besides, he never heard of a class in the first two and a half years of high school, and now he says he is completely disgusted in just a few days. Two and a half years of knowledge? Impossible!

The scumbags were shocked!

Surprise value from Chen Lin +10.

Surprise value from Li Min +2.

...

The shock value from Luo Mingyu +1.

The shock value from Zheng Xuanyu +10!

Xiao Ming discovered one thing. In addition to the surprise value, the students have a shock value for their performance. The shock value will be converted into a surprise value according to a certain ratio (1:2), and they will be absorbed by the game system in their minds. That said, it's better to shock everyone than surprise everyone!

In this wave, Xiao Ming harvested 90 surprise points, and now he has a total of 172 surprise points.

What makes Xiao Ming happiest is that Zheng Xuanyu, the goddess whom the body admired most in the past, actually contributed 10 shock points! It shows that this girl is really good, no matter your grades are good or bad, as long as you perform well enough, she will give you a thumbs up.

With a surprise value of 172 points, it's almost time to open a wooden treasure chest. But Xiao Ming is still talking about the topic, and he needs to finish the talk.

A bigger wave of surprise value harvest is still to come! Xiao Ming wants to explain the second question of this question. Only Zheng Xuanyu can do it in the whole class.

This question, even if I tell you the answer and the process, if you don't digest it well, and let you answer it again, you won't!

Zheng Xuanyu put down the pen completely and concentrated on Xiao Ming's topic. There are many ideas on this topic. Zheng Xuanyu has to see if Xiao Ming's ideas are the same as his own.

Xiao Ming was a little tired, and his weak body made it difficult for him to bear the heavy responsibility of lecturing. Lectures were really physical work.

However, in order to make the surprise value a little more, Xiao Ming relied on the support of his mind.

It seems that his willpower is much stronger after the not-so-real experience of Pan Shaxing technology warriors.

Next, I will explain to you the second question of this question, and prove this inequality...

Xiao Ming's thoughts continued to remain clear, explaining each step of the second question in detail.

Teacher Fang nodded again and again! Xiao Ming's way of solving the problem is a little more ingenious than the reference answer, but easier to understand.

With reference to the solution method of the answer, students with good grades can understand it, while students with average grades are basically confused, and Xiao Ming's solution method can be understood by more than half of the class.

Zheng Xuanyu nodded again and again, feeling a little excited in his heart. Xueba would be excited when he saw the ingenious way of solving problems. Xiao Ming's solution is actually the most ingenious and easy to understand!

The boy Zhu Haolun, who was sitting next to Zheng Xuanyu, also looked at Xiao Ming incredulously. Zhu Haolun was the second in the class, and he always aimed to catch up with Zheng Xuanyu. He also failed to answer the second question.

Zhu Haolun couldn't believe that Xiao Ming could solve the problem in a different way from the reference answer.

For more than 20 minutes, Xiao Ming continued to explain, and when the last word fell out, the classroom burst into warm applause!