rings are crazy

Rushing, chalk is walking quickly on the blackboard.Yao Wei was very surprised at first, Li Weidong didn't have any math tutoring, so it's not bad if he can recognize all the symbols.Why did he suddenly change his sex today? Can he really solve such a difficult trigonometric function problem?

But as the formulas were listed out, Yao Wei fainted at that time.What Li Weidong wrote turned out to be a lot of junior high school math formulas!Using junior high school knowledge to solve this difficult high school trigonometric function problem, brother, are you out of your mind?Yao Wei was so angry that she wanted to grab the books on the desk and throw them over.

Ugh……

The students below sighed.Liu Heigou was so happy that he almost laughed out loud, thinking that you were really talented, but you are still a piece of trash!Yin Yang said angrily: "Hey, your solution to this problem is really special. I haven't seen it in any book I've taught for so many years. What is this you wrote, a heavenly book? Haha, Li Weidong, you are really talented! The students are all optimistic, a new solution of trigonometric functions will be born in the hands of Li Weidong in my class!"

Liu Heigou tried his best to sarcasm, but Li Weidong turned a deaf ear to these words. The chalk in his hand seemed to be endowed with spirituality, and he swayed freely. Strings of numbers and symbols appeared on the blackboard, as well as some inexplicable lines and graphics.Liu Heigou was still sarcastic at first, but when he watched it, he felt something was wrong, because he found that although Li Weidong only used the junior high school formulas, he used each formula with ease, and the checking calculation was extremely smooth, not like mathematics at all. The look of an idiot!

what happened?What is this guy doing, he doesn't really want to use his junior high school knowledge to solve trigonometric functions?

Liu Heigou was a little stunned for a while, as a teacher, he couldn't even help the worst student in the class, so today his reputation will really be ruined!Thinking about it this way, I hurriedly read Li Weidong's solution step by step carefully.What made him even more puzzled was that Li Weidong's calculation steps were basically not solving problems, but rather proving something!

What does he want to prove?Liu Heigou glanced at Li Weidong, and found that his expression was unusually strange, his brows were furrowed for a while, and he was inexplicably happy for a while, but the chalk in his hand was writing faster and faster. After a while, the blackboard was filled with writing. After dropping it, I continued to write.It's like the protagonist in a martial arts novel suddenly got a martial arts cheat book, and practiced it like a drunk, addicted to it and unable to extricate himself.

Liu Mo is a disgusting person, but he is a math teacher after all, and he can see there is a way in it at a glance.He also ignored the cynicism like before, and concentrated on watching his steps to solve the problem.Until Li Weidong drew a triangle, added a vertical line, and then calculated the ratio of the opposite side to the hypotenuse, Liu Mo suddenly let out a low sound.Only then did he fully understand that Li Weidong, a math idiot, was actually deriving the theorem of sines after spending so much time checking his brains on the blackboard!

As we all know, theorem seems simple, but the first person to derive the theorem is either a genius or a lunatic!Liu Mo can completely conclude that Li Weidong doesn't know anything about the theorem of sine and cosine at all. This guy is completely relying on his own conjecture to prove and deduce it!

This kind of thing is easy to say, but extremely difficult to do. For example, everyone knows that the earth is round and crabs are edible, but the first person to think of it needs unimaginable courage and wisdom!

Freak! ***, this is a complete madman!Liu Mo looked at Li Weidong waving the chalk, and was slightly absent-minded for a moment.

The students below didn't understand what was going on, they just thought that Li Weidong had taken the wrong medicine today, and he didn't do a good job of endorsing the book, but he wanted to touch Liu Heigou's bad luck and ask for trouble.After all, mathematics is not English. If you can memorize two words, you can learn it. Mathematics requires not only mastering a lot of theorems, but also doing a lot of exercises to master it.Look at what Li Weidong wrote on the blackboard again, the lips of the donkey are wrong, isn't it the way to solve the problem at all!

Only Yao Wei was secretly wondering.She is the top math student in her class. She has won the Olympiad and is very talented in mathematics.She found that these things written by Li Weidong, formulas within formulas, became more and more complicated, but there was not a single mistake. This is simply not something that a math blind can do!

Looking at Liu Mo's expression, Yao Wei believed in her own judgment more and more. Li Weidong must have done something crazy again!She was afraid that Liu Mo would keep pestering him. After all, it was Principal Zhang who gave Li Weidong the privilege of arranging his time freely. If something like this happened, he had to find Principal Zhang to solve it.So he didn't ask for leave, and sneaked out through the back door.

Liu Mo didn't notice Yao Wei at all, his attention was all on Li Weidong at the moment.I thought that if I let this guy do the calculations again, if he could really deduce the theorem of sine and cosine, if he solved this trigonometric function again, he would lose face at all!Pretending to cough twice, he said, "Li Weidong, don't embarrass yourself here at your level. The whole class is watching. You don't feel ashamed yourself, and don't waste everyone's time, okay?"

Li Weidong is writing vigorously, and his calculations are straightforward.I just feel that formulas and inspirations appear in my mind naturally, and I feel happy only if I write them out in one breath!He didn't even hear what Liu Heigou said.

Seeing that he ignored him, Liu Mo became even more angry, and couldn't help but go up and push him and said, "Did you hear that! It's a mess, what's the point? Hurry up and stay cool, don't affect my class. !"

With such a push from him, Li Weidong's brain, which was calculating at high speed, suddenly buzzed and became a mess, leaning against the blackboard in a daze, forgetting what to do.Guo Dapeng took a few steps and ran to the front, supported Li Weidong, glared at Liu Mo and shouted: "Why do you hit someone?!"

"Why hit someone?"

The classmates cheered and stood up together.Liu Mo was taken aback when he saw the situation, and stammered, "No, I didn't, I, I just pushed him..."

The loud noise made Li Weidong wake up. Seeing Guo Dapeng pulling him, he asked strangely, "What are you doing, Dapeng?"

"Boss, are you okay?" Guo Dapeng pointed at Liu Mo, "This guy pushed you just now!"

At this time, Li Weidong only thought about the questions on the blackboard, and didn't bother to argue with Liu Mo.But when I picked up the chalk again, I found that my mind was empty, and the thoughts just now were gone.He hesitated and said, "Dapeng, have I solved this problem yet?"

Guo Dapeng shook his head helplessly.Liu Mo quickly said: "Li Weidong, aren't you kidding me that I'm not good enough? Why can't I solve such a simple trigonometric function, haha! We have a word first, if you can't solve it, you won't be allowed to take my class! You tell me go out!"

Guo Dapeng was so angry that he wanted to do something at that time, Li Weidong reached out to stop him, glanced at Liu Mo, and said, "I would like to admit defeat, Mr. Liu, I will not take your class in the future." He returned to his seat and calmly packed his schoolbag, ready to go go outside.

"Wait a minute!"

A majestic voice sounded, and Principal Zhang walked in with a sullen face.Liu Mo's usual actions had been heard in his ears a long time ago. He just considered that this is a graduation class and the college entrance examination is about to be taken, so he didn't pursue too much.And Li Weidong was free to arrange his time, which he personally approved, but Liu Mo jumped out to make irresponsible remarks. Of course, Principal Zhang was extremely upset.

"Mr. Liu, what's going on?"

Seeing Principal Zhang's face, Liu Mo knew that something bad happened today, and he thought to himself who the hell called me?But he couldn't figure out that it was Yao Wei, his most proud disciple.He quickly put on a smile and explained: "Student Li Weidong can't keep up with the progress in mathematics now. I think it will be difficult for him to follow the class. I just want to arrange for him to study by himself, and then I will find time to tutor him alone..."

"Cut~~~"

The students booed.Principal Zhang looked at the blackboard without saying a word.Li Weidong's complicated problem-solving steps are still there, although they are endless, but Principal Zhang was originally a top student in the Mathematics Department of Fudan University, and he saw the key at a glance, and his face became more and more ugly.Liu Heigou came down without feeling sweaty, picked up the blackboard eraser and said, "Principal Zhang, I, I should go to class first." He wanted to erase the calculation formula written by Li Weidong, but was wiped off the blackboard by President Zhang. snatched it down.

Li Weidong was very puzzled. Looking at what was written on the blackboard, he didn't understand why, and he didn't know why Principal Zhang's face was so solemn. He wondered if he accidentally wrote something vulgar, and the principal came here in person?

"Student Li Weidong, please come here." Principal Zhang politely called Li Weidong to the front of the blackboard, pointed to a long and extremely complicated formula written by him, and said, "There are several fractions in it, directly Substitution will make the calculation process very complicated, why not use the sine function formula?"

Li Weidong sweated a little, and said weakly: "I'm sorry, Principal Zhang, I don't know much about mathematics, and I don't know what the sine function formula is."

"Then sin and cos, do you know what they are?"

"This, I seem to have heard of it, but I don't know what it is." Li Weidong felt very ashamed of his answer, and quickly explained: "I have been reciting English for the past few days, and I haven't studied math yet..."

Principal Zhang took a deep breath, glanced at Liu Mo, and said, "Teacher Liu, come out."

Liu Mo's face turned into mourning, and he followed Principal Zhang out of the classroom.The students, including Li Weidong himself, didn't know what happened, so they ran to the door to find out what happened.

Only the principal's angry voice came from the corridor:

"Ms. Liu, you are also into mathematics. I believe that as a teacher, your level is not so superficial. Do you understand the formulas and steps written by Li Weidong?"

"Understood...understood."

"Understand what?"

"Li Weidong...he is deriving theorems! He is very talented in mathematics..."

"Oh, so you also know that you need talent to do mathematics. Can you tell me, among the students you have taught, how many have such talent? However, such