The high school classroom, the same teaching content, all of this inevitably made Liu Mengchao tired. If it weren't for the invisible system panel in front of you, it would keep reminding you that the amount of the pot was rising. I'm afraid I'll have fallen asleep a long time ago.

Who said that only Chinese teachers are boring in class? In some ways, Japanese teachers are able to go beyond the limits of human beings and turn every lesson into outrageous torture.

Hua Weiwei, on the other side, was also tilting her head sideways at this time, observing her partner, or teammate.

Out of the nature of a girl, Hua Weiwei always has some inexplicable affection for weak boys. The most important thing is that Hua Weiwei didn't see a kind of red in Liu Mengchao's body. Naked sensuality, which made her feel a little reassured. For the unknown future and the fear of death, at this moment, she had to pin her safety on Liu Mengchao.

Hua Weiwei ruffled her hair and hooked it on her slender and transparent ears. She didn't think there was anything wrong with this, girls, especially girls like herself, who were not ugly, should have been like vines, clinging to men, and then easily borrowing strength to tide over all difficulties and enjoy a wonderful life, just like Zhang Qingqing who had just met. Everything is taken care of by the smelly man, and all he has to do is show a silly, somewhat innocent smile.

Liu Mengchao didn't know what Hua Weiwei thought, because he had already been named by the teacher to stand up.

"Classmate Liu......" The math teacher wearing black-rimmed glasses called Liu Mengchao with a jealous face, "You can answer this question for everyone." ”

Liu Mengchao, who had just been freed from his trance, looked sleepily at the question given by the math teacher.

"It is known that in the sequence {An} and {Bn}, A1=B1-2.

(1) If nA(n+1)=(1+1/n)AnAn+(2/n)(1+n)An+(1+n-nn)/n, find the general term An;

(2) If nBn(2+Bn)=(1+1/n)B(n+1)+(1+n-nn)/n, find the general term Bn;

(3) Under the conditions of (1) and (2), let =ln[(1+An)(1+Bn)], and find the sum of the first n terms.

Hehe...... No......

Liu Mengchao only felt that his head was full of black lines. Isn't this the world of anime?,Why does the teacher give himself a math problem.,The most important thing is that I can't do it at all! Why don't you wipe out the math teacher too......?

"You won't do it, will you?" The math teacher happily looked at Liu Mengchao, who stood up. If this guy is popular with girls and has good grades, then there is no reason at all!

"You have to listen carefully in class!"

Aggressive.

The pencil lightly clicked on the notebook and pushed it in front of Liu Mengchao.

The handwriting is very delicate, just like an ancient lady painting, although it is a little scribbled, but every word can be seen clearly.

Without hesitation, Liu Mengchao read out the following answer according to the rules.

"In the first question, first add n to both sides of the equation, and then multiply n on both sides of the equation to get it

:[1+A(n+1)]/(1+n)=[(1+An)/n]^2

Take the logarithm ln on both sides

Obtained: The sequence {[ln(1+An)/n]} is an equal proportional series with the first term ln3 and the common ratio of 2, which is easy to find

(1+An)/n=3^[2^(n－1)],

Then An={3^[2^(n-1)]}n-1."

"Totally ...... Correct ......" The math teacher looked at Liu Mengchao who was talking eloquently. Even the best student could not blurt out the answer to the question just now.

There are no drafts and notes...... Could it be that the current Chinese students are all geniuses?!

"Ahem...... ahem" Liu Mengchao obviously also noticed the expression of the math teacher, only to see him raise his head and read the answer in the notebook slowly.

"(2) Analogy (1) collates (1+n)[1+B(n+1)]=[n(1+Bn)]^2, and analogy (1) is easy to obtain n(1+Bn)=3^[2^(n-1)], then Bn={3^[2^(n-1)]}/n-1."

As soon as Liu Mengchao finished reporting the answer, Gui Yanye's face immediately turned red. On the one hand, it was because she hadn't written the answer to the third question, and more importantly, she didn't know how she could make such a move.

Shy.........

Or are you afraid ......?

Gui Yanye lowered his head stiffly, not daring to look at Liu Mengchao, who had already sat down.

Bang bang ......

The heart was beating, and the palms of his hands were sweating unknowingly, and Gui Yanye quietly, from the gap in the hair, secretly glanced at Liu Mengchao, and immediately lowered his head again.

The silver mobile phone was tightly held in her hand at this moment.

Click......

The flip phone was opened. The dim screen, at this moment, became Gui Yanye's mirror, carefully reflecting Liu Mengchao's face.

His smile is clean, like a ray of sunshine, not dazzling, but very warm.

It seems like...... He's different from those boys.

Chaotic thoughts, like cherry blossoms flying in the sky, drifted along the wind to an unknown distance.

"Jingle bell!"

Before I knew it, it was time for class to end.

Gui Yanye looked at his notebook in surprise. Except for the notes taken at the beginning and during class, there is no trace of writing on it.

Class?!

Liu Mengchao made a waiting gesture to Hua Weiwei, turned his head, and said to Gui Yanye, who was still in a daze,

"Today's class, thank you."

"That'...... Piece...... No...... With ......"

Gui Yanye raised his head suddenly, but found that Liu Mengchao had been pulled away by the newcomer Hua Weiwei. Slender fingers, crossed over his chest, as if praying, reverently recalled everything that had happened today.

"Original...... There really is you......" with his chin against his smooth collarbone, holding the mobile phone he had just opened in his hand, but his eyes were full of incredulity, "All this is not a dream......

On the screen of the mobile phone, Liu Mengchao's smile was lying lazily in the center.

"You're an exception, though. Don't just forget me, my name is Liu Mengchao. ”

Liu Mengchao, I really heard you speak, it seems to be in a dream, but I remember it very clearly.

————————————————————

"How's it going?"

As soon as she walked out of the classroom door, Hua Weiwei couldn't wait to ask.

"Progress?"

Liu Mengchao leaned against the windowsill, but his eyes fell on Gui Yanye, whose only son was sitting on the seat. In the bustling classroom, she was the only one sitting there, out of place with the whole classroom.

"I'm asking you, how is the progress with that big-breasted girl, this is related to the mission of the main god." Hua Weiwei pouted and looked at Liu Mengchao with a worried expression.

According to her experience, at such times, the boy will pat his chest and say that no matter what happens, he will help her fulfill her wish.

Compared with Zhang Qingqing's explicitness, Hua Weiwei felt that she was a little more womanly. Don't give anything, just show a pleading demeanor, and the man will naturally fall into the net.

Suddenly, Hua Weiwei's eyes lit up, and she pulled Liu Mengchao's sleeve and pointed into the distance.

"Look, isn't that Makoto Ito?!"

"What's wrong?" Liu Mengchao's gaze still did not leave Gui Yanye, because he didn't find anything wrong, and the participants of the four main god games did not have any major psychological fluctuations.

In other words, the value of the pot has not gone up. I still want to complete it as soon as possible, the main god world, and this day's linkage with the campus world, successfully attack Gui Yanye's good.

Other than that...... Looking at the past from here, sitting there, looking out the window, the laurel leaves of the flying bluebirds, there is a quiet beauty.

"Don't be in a daze, Liu Mengchao! You see, Zhang Qingqingzheng and Ito Makoto, holding hands, are wandering around the campus. ”

"I'm not in a daze......" Liu Mengchao shook his head, "I just remembered a poem." ”

"Poetry?"

"You stand on the bridge and look at the scenery,

The people watching the view are watching you from upstairs.

The moon adorns your window,

You decorate other people's dreams. ”

Will I decorate your dreams, Gui Yanye?

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As soon as I got up in the morning, I saw that the recommended votes exceeded 500 ~ happy ing~~~~~ and I will continue to work hard in the afternoon ~~~

Quietly, I found that math problem from the post bar...... I won't do it myself, lala~~~~

Ask for recommendations, ask for collections~ Readers, there are a lot of red envelopes for the New Year, and it is best to fill the whole bed ~(╯▽╰)~