God-level Xueba system

The first thing that catches the eye is a pair of big black and clear eyes!
Under the eyes is a pair of soft and full red lips, coupled with her graceful and smooth cheeks, and a pink face that is blown to pieces, she looks like a peerless beauty of national beauty!

Isn't this the school girl Lin Hui?
"Classmate, who are you?" Lin Hui naturally didn't know Yan Xin, so she asked charmingly.

"Oh oh oh! Hello! I'm Yan Xin from Class [-], Senior Three!" Yan Xin quickly stood up and stretched out her hand.

Lin Hui's face turned a little rosy, Yan Xin just remembered, this is not a meeting of important people, how could an innocent girl shake hands with a boy she didn't know?
"I know you! You are the second dark horse this school year, right?" Lin Hui covered her mouth in surprise.

"Well, maybe it is!" Yan Xin was somewhat embarrassed to be praised by the school beauty.

The two stood for a while, but there was really nothing to talk about. Instead, a person came from a distance and broke the deadlock.

"Lin Hui, tell you to wait for me, I'm going to buy you a cup of milk tea! What's the rush? Yo! Isn't this Yan Xin from our class?"

Zhang Ze's attention was all on Lin Hui, and he didn't notice Yan Xin until he was in front of him.

"Why are you here? Are you here to borrow comic books?" Zhang Ze sneered disdainfully.

Naturally, Yan Xin would not have the same knowledge as him: "I'm here to learn! Do you have any opinions?"

"Study? Oh my god! Do you really think that you have a swollen face and become fat after passing the exam? If you really have that strength, why didn't you study hard before? Maybe how you passed the exam!" Zhang Ze mocked.

"Hehe! I don't know who it is, this exam is behind this scumbag, it's ridiculous!" Yan Xin sniffed, this Ze is really boring.

Mouth gun?

I can't kill you!

"Okay~ Everyone is here to study! What are you arguing about! Others will talk about us later!"

Seeing the disgusted looks from a few people in the distance, Lin Hui quickly stopped Yan Xin and Zhang Ze.

"Go and sit somewhere else! This seat is reserved for those who are good at studying! Are you worthy too?" Zhang Ze whispered.

"Oh! My classmate, can you keep your voice down? You're interrupting my study!"

As soon as Yan Xin opened the book, Zhang Ze was nagging here, and Yan Xin yelled out loudly.

This kind of behavior is naturally cast aside in the library, and everyone looked back at Zhang Ze with disgusting eyes.

Zhang Ze couldn't steal the chicken, so he quietly closed his mouth.

【Ding!After memorizing 50 words tonight, [-] points will be awarded! 】

The voice of the system sounded in Yan Xin's mind, and Yan Xin couldn't help curling her lips.

Nima, this word is too cheap!
In this way, a word is worth 0.1 points?
The system is really stingy!
Yan Xin opened the English book, and looked up to see Lin Hui, who was opposite her, looking at her. Seeing Yan Xin raised her head, the girl quickly blushed and lowered her head.

Yan Xin took a closer look at the table of the two of them. It was full of review materials and snacks. Presumably these two people often come to study together after school!
Could it be that Zhang Ze has been clinging to Lin Hui all day long, and finally he has achieved a positive result?
Yan Xin shook her head, distracted!

It's better to memorize words quickly and earn points!
How can it be important for a girl to study!
Besides, at this stage, Yan Xin dare not get in touch with girls in depth!
Because the system will kill him at any time!

Yan Xin felt cold in his crotch just thinking about it!
Looking at the English book in front of her, Yan Xin felt somewhat comforted!
With the skill of photographic memory, reciting vocabulary is a piece of cake for Yan Xin!

Yan Xin just skimmed through the [-] words, and he already knew them by heart, but Zhang Ze hadn't turned the page yet!

What a waste!

He even claims to be a master!

With this speed of memorizing words, I'm almost catching up with bastards!
"Zhang Ze, take a look at this question, can you know it?" Lin Hui brought the math study booklet in front of Zhang Ze. At this time, Zhang Ze was racking his brains to recite the words. The expression suddenly disappeared!

"Let me see!"

Zhang Ze quickly picked up the pen, and then took out the A4 paper and started writing quickly.

"What question? How about I take a look too?" Yan Xin just finished reciting [-] words at this time, and raised her head to ask Lin Hui.

Lin Hui just wanted to say that you definitely can't, but after another thought, the boy in front of him is the No. 2 mock exam of the school year!Maybe he will!

"Well, that's the question!" Lin Hui also handed the exercise booklet to Yan Xin.

"Would you know how to do it?" Zhang Ze, who was still immersed in the problem just now, suddenly looked up at Yan Xin and said mockingly.

"Do you care if I can do it or not? If you can really do it, you can force me! Old ladies? You talk a lot!" Yan Xin really didn't want to swear in front of the school belle.

But this Ze really deserves to be scolded!
“已知a>0，b>0，且a2+b2=1，求a倍根号下1+b2的最大值。”

Just break the problem?

It's easy to grab!
Yan Xin didn't think much in the notebook, and started writing in a hurry!

This kind of question is usually the final question in the college entrance examination, no wonder Xueba school Hua Linhui can't do it!
The difficulty of this kind of question is that it is itself confusing!
Many students have preconceived ideas when doing questions. The first thing they will consider is the problem of a>0, b>0, and a2+b2=1.

But the key point of this question is to simplify the formula behind!
Therefore, for this kind of question, a and b will have a fixed value only if and only if there is an equivalence relationship between a and b. Otherwise, try one by one, and you will not be able to finish it!

Within a minute, Yan Xin made it.

"Hey! The answer is that a is half root three, b is half root two, and the maximum value at this time is three quarters root two!"

Yan Xin handed the straw paper to Lin Hui, but Zhang Ze still had no clue.Although this guy has written a lot of methods on paper, but none of them are correct!

Keep pretending!

Yan Xin smiled disdainfully.

"Wow! I didn't expect this question to be so simple! As long as I don't think about the overall situation, I can just simplify the following formulas first!" Lin Hui patted her head cutely.

This playful action made Yan Xin's eyes straighten!

I have to say, people are good-looking, and their actions are fucking good-looking!
"That's right! Lin Hui, your method is good! I." Zhang Ze was interrupted by Lin Hui before he could finish speaking.

"I didn't propose it! It was Yan Xin! And he has already made it!" Lin Hui put the problem-solving steps in front of Zhang Ze, and Zhang Ze opened his mouth in surprise!
This kid actually made it so quickly!
And the steps are so easy!
Looking at the A4 paper he had counted on, Zhang Ze suddenly felt very embarrassed!
I have been tossing here for a long time, but I have no idea yet, Yan Xin calculated it directly?

"Hehe, it's just self-defeating!" Zhang Ze snorted, picked up the book and went outside, apparently going out to recite words!