I control the world with magic

"Student Yang Dongqing, do you know what the biggest responsibility of a student is?" Su Mu interrupted calmly.

"What tricks are you trying to play!?"

"The biggest responsibility of a student is to study! And you, student Yang Dongqing, as the last student in the class, have seriously dragged the class down. As the class monitor, I have the obligation to provide you with after-school tutoring." Su Mu pushed his glasses, holding a thick book in his hand, and the words "excellent in both character and learning" were almost written on his face.

"Su Mu! You are a psychopath! I learn nothing!"

Su Mu shook his head in hatred: "Your learning attitude is very improper, it seems that I must motivate you."

As he said, he took out a math exercise book and placed it in front of Yang Dongqing.

"Come on, solve this trigonometric function, the formulas you need are all in the book."

"I'll solve you..." Yang Dongqing was about to curse, but Su Mu's next sentence made his face change suddenly.

"If you can't do it within fifteen minutes, I will cut off one of Miss Jasmine's fingers." Su Mu smiled.

Yang Dongqing raised his head suddenly, his face full of anger: "You dare! If you dare to touch Jasmine..."

"Hush! Be patient, I always keep my word. If I say I will cut off one of her fingers, I will never cut off two. Now you have the chance to save her. If you really love her and don't want her to get hurt, then solve this trigonometric function.

It's just a trigonometric function. You have learned it in class, and the textbook is in front of you. If you still can't do it, don't blame me.

Now, start the timer."

Su Mu smiled and took out a pocket watch from his arms. The dark gold pattern on it shone abnormally under the light. He put the pocket watch on the table not far away and then left.

Yang Dongqing kept cursing, but after a while, he still turned his attention to trigonometric functions, because he knew that Su Mu, a madman, could do anything.

"Huh! It's just a trigonometric function, very simple." He took a deep breath and examined the question carefully.

[Given that in ΔΑΒC, ∠A=60°, a=3, b=square root of 3, find the size of ∠B. ]

Time passed slowly, one minute, two minutes, three minutes...

"Ahhhh!! Fuck fuck fuck! How big is this B!"

There is a saying that people can do anything when they are pushed to the limit, but it is obviously wrong, because math problems cannot be solved. If you can't do it, you can't do it.

Fifteen minutes later, Su Mu walked into the dungeon elegantly with a cane, holding a crystal goblet in his hand, which was filled with red wine.

"Student Yang Dongqing, do you have the answer?"

Yang Dongqing, who was obsessed with mathematics, suddenly raised his head. At this time, his mental state was very bad, bloodshot eyes were like spider webs, and he kept muttering: "sinB=b×sinA÷a, which is equal to square root 3 multiplied by sin60°........"

"Fifteen minutes will be up soon."

"Don't make noise! ​​I'm about to figure it out, sinB=half! Because a＞b, so ∠A＞∠B, and because sinB=half, so..."

Yang Dongqing's expression suddenly shook, an answer The case blurted out: "∠B=30° Hahaha... I figured it out!!"

Pa pa pa...

Su Mu clapped his hands with a face full of satisfaction: "Congratulations, classmate Yang Dongqing, you saved one of Miss Jasmine's fingers."

However, before Yang Dongqing could be happy for too long, Su Mu took out another math problem: "It's still fifteen minutes. If you can't solve it, I will cut off one of Miss Jasmine's toes."

"Su Mu! You bastard! What on earth do you want to do!"

Su Mu smiled slightly. He found that Yang Dongqing's mental state was still too good, and he needed to do a few more math problems.

"The time limit is 15 minutes."

After saying that, he walked away with a cane.

Yang Dongqing, who was about to collapse, had to move his eyes to the new math problem after venting.

After taking a glance, he felt his eyes go black.

【1, 3, 8, 20, 48, 112, 256........

(1) Please find the general formula of the sequence.

(2) Find the 20th term of the sequence.

(3) From which term does the sequence begin to be greater than 10,000? 】

"Sumu! I ****"

......

......

The next day, Yang Dongqing stayed awake all night.

Because he had been doing math problems all night, his math skills had greatly improved. He had mastered trigonometric function formulas, arithmetic progressions, geometric progressions, linear equations of two variables, and other advanced math secrets.At this time, his mental state was almost collapsed, his eye sockets were sunken, his face was numb, and his eyes were dull.

The group of young ladies from yesterday came again, but no matter how they danced, they could not make Yang Dongqing's eyes move at all.

In the monitoring room, Su Mu saw that the time was finally right and he could hypnotize him.

Everything he had done before was to destroy Yang Dongqing's spirit, especially the last math problem. Only a poor student could understand the pain of racking his brains but still not being able to come up with an answer. It just so happened that Yang Dongqing was a poor student.

The mental resistance of the extraordinary is very high, and the spirit must be weakened to the extreme to ensure the success rate of hypnosis.

This time he was going to do deep hypnosis, not the previous psychological suggestion.

Psychological suggestion is only a shallow level of hypnosis. The hypnotized object still maintains his own thoughts, but will make corresponding choices or reactions under psychological suggestion.

Deep hypnosis is like hypnotizing the Viper Gang, completely distorting the mind of the hypnotized object, but this deep hypnosis is not long-lasting, and it needs to be deepened every once in a while. Perhaps when his mental power becomes stronger, he can achieve permanent hypnosis like a mental stamp.

Boom!

The door of the dungeon was opened again.

Yang Dongqing, whose eyes were already blurred, heard the sound of the door opening, and his whole body trembled as if it was a conditioned reflex, and extreme fear appeared on his face.

"No... No! I don't want to do math problems anymore! Ugh..."

As he said this, Yang Dongqing actually retched.

Su Mu was very satisfied with this, "Student Yang Dongqing, it seems that you have fully absorbed and digested those mathematical knowledge, and now you are a little full.

It seems that we can proceed to the final stage."

Yang Dongqing seemed to have not heard it, and he couldn't help but mutter in his mouth: "sin, cos, tan, cot..."