Xiao Ming stayed up late to read novels yesterday, and in the early hours of the morning, he did something indescribable and wasted his physical strength, plus he didn't eat breakfast in the morning, he walked up obscenely, and he was like a zombie.

"Xiao Ming, what are you going to do!" Teacher Fang was startled.

I just died suddenly and came back to life, and my physical strength is exhausted. Xiao Ming only felt that he would be dizzy and fall to the ground after walking a few more steps, he approached Teacher Fang step by step, put his hand on Teacher Fang's shoulder, and gasped.

"Damn body, it can't play at all!" Xiao Ming scolded in a low voice.

Xiao Ming's performance surprised the students again.

"What is Xiao Ming going to do?"

He ...... He approached Teacher Fang!"

"Wow, Xiao Ming is only twenty centimeters away from Teacher Fang! What is he going to do!

"Boom?"

"No kidding, Mr. Fang is fifty-nine this year, and he will retire next year!"

Xiao ...... Xiao Ming, what the hell are you going to do!" Teacher Fang was frightened by Xiao Ming's pale face.

"Topic. Xiao Ming's voice came out of his throat.

"This kid is sleepwalking! He's going up to talk about math?"

"This kid happened to be the right kid in biology class just now, so he wouldn't think he could do the same with this function problem, would he? ”

Zheng Xuanyu, who had been smiling, frowned slightly, what she didn't like the most was students who disrupted classroom discipline.

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

He adjusted his breath and said while writing on the blackboard: "This problem involves the knowledge of derivatives and quadratic functions, and to solve this kind of problem, we need to master the idea of classification, first we seek derivatives. ”

Xiao Ming wrote on the blackboard how to find the derivative of f(x).

Derivation is the simplest and most basic step of the function problem, and Xiao Ming, a scumbag, can write it, which is not unexpected by the students.

At this step, Xiao Ming did not get a surprise value.

Teacher Fang was going to drive Xiao Ming down, but it was rare to see Xiao Ming, who was usually taciturn and could only score 34 points in mathematics, take the initiative to lecture on the topic, and Teacher Fang still patiently let Xiao Ming continue.

"Next, let δ=a^2-4 be less than or equal to 0, i.e., when -2 is less than or equal to a less than or equal to 2, g(x) has no real root on (0, +infinity)......"

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

Zheng Xuanyu's brows relaxed, Xiao Ming's board book has the same beautiful font as the biology class just now, mainly because his ideas are clear and detailed, not like he is here to make trouble.

Zheng Xuanyu, as a member of the study committee of the class, whether it is a good or a bad grade, as long as she studies hard, she welcomes and appreciates it.

Teacher Fang looked at Xiao Ming's solution steps and nodded again and again, it was completely correct!

Xiao Ming said: "Therefore, when a is less than or equal to 2, f(x) decreases monotonically at (0, + infinity), and 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 question of this question very smoothly, although it was not too difficult, but at the level of the third middle school and the third class, two-thirds of the people in the class would not be able to do it.

The students who were willing to listen listened attentively and transcribed the steps on their test papers, and the scumbags who were unwilling to listen to the lecture and took the initiative to give up the last big question also looked at Xiao Ming in amazement.

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

Xiao Ming, who does math multiple-choice questions, will only "choose the shortest three, short and long, and choose the longest", fill in the blanks only "0,1 or -1", and only write "solution, colon" and then copy the question stem, Xiao Ming, who is actually explaining the last big question.

The scumbags looked dizzy, not to mention that they didn't take the answer and spoke directly, even if they read it with the answer, they couldn't read some formulas clearly.

"Wacha! Xiao Ming, this is taking medicine!"

"What's going on with this kid today, biology class is showing himself, math class is also showing himself, and he seems to be able to do anything!"

"Xiao Ming slept all morning, and after waking up, his whole person changed!"

"Xiao Ming's face has not been good these days, like 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 know this kid, he has no hobbies other than sleeping and reading novels, besides, he didn't listen to a single class in the first two and a half years of high school, and now he said that he completely made up for two and a half years of knowledge in just a few days?

The scumbags were shocked!

"Surprise from Chen Lin +10. ”

"Surprise from Li Min +2. ”

……

"Shock value +1 from Luo Mingyu. ”

"Shock value +10 from Zheng Xuanyu!"

Xiao Ming found one thing, in addition to the surprise value of their own performance, the shock value will be transformed into a surprise value according to a certain ratio (1:2), and it will be absorbed by the game system in their minds. That said, it's better to surprise everyone than to surprise everyone!

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

What makes Xiao Ming happiest is that Zheng Xuanyu, the goddess who admired her body the most in the past, actually contributed 10 shock points! It shows that this girl is really good, no matter whether you have good or bad grades, as long as you perform well enough, she will praise you.

172 surprises, and you're just a little bit close to opening a wooden chest. But Xiao Ming is still lecturing, and he needs to finish the talk.

An even bigger wave of surprise is still to come! Xiao Ming wants to explain the second question of this question, and Zheng Xuanyu is the only one in the class.

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

Zheng Xuanyu completely put down the pen and concentrated on Xiao Ming's topic, there are many ideas for this question, Zheng Xuanyu wants to see if Xiao Ming's thinking is the same as herself.

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

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

It seems that after the not-so-real experience of Panshaxing Tech Warrior, his willpower is much stronger.

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

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

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

Referring to the way the answer is solved, students with good grades can understand, and students with average grades are basically confused, and Xiao Ming's solution can be understood by more than half of the people in the class.

Zheng Xuanyu also nodded again and again, slightly excited in his heart, Xueba will be excited when he sees the ingenious way of solving the problem, Xiao Ming's solution is actually the most ingenious and easy to understand among many solutions!

Zhu Haolun, the boy sitting next to Zheng Xuanyu, also looked at Xiao Ming incredulously, Zhu Haolun was the second in the class, and he had always been striving to catch up with Zheng Xuanyu, and he didn't make the second question of this question.

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

For more than 20 minutes, Xiao Ming explained endlessly, and when the last word fell, the classroom erupted in warm applause!