Xueba's Sea of ​​Stars

Chapter 24
Matching method, substitution method, undetermined coefficient method, construction equation elimination method...

Just by glancing at the function topic, Wu Bin will pop up several ideas for solving the problem, and find the most suitable one in an instant, which is an experience he has never had before!

'Cool! ! '

This unobstructed feeling purified Wu Bin's body and mind.

In terms of function, Wu Bin has already laid a very solid foundation. Now that his ideas have been developed, it is natural that a towering building will rise from the ground.

Change to the law of sine, multiply the denominator, and then substitute it into the induction formula...

Write it as an exponential function, separate xy, and expand the two exponential functions binomially...

First write the expansion of sin(nx), find the law, and extend n from natural numbers to real numbers...

……

At this moment, on the prairie of mathematics, Wu Bin is as flat as a horse!
"Gu..." "Gululu..."

Wu Bin, who was galloping his horse, was about to conquer the next piece of grassland, but his stomach was screaming, and then he remembered that he hadn't eaten dinner yet...

In the quiet classroom, Wu Bin's stomach growled so loudly that several people around couldn't help sniggering.

But at this moment, Wu Bin didn't have any food reserves, so he had to check the time and found that it was already the third period of self-study, and he would go back to the dormitory no matter how much he endured.

It's a pity that Wu Bin can bear it mentally, but his stomach keeps protesting through his intestines, and the sound of "gurgling" keeps coming out.

But Wu Bin didn't care about it anymore, he pulled up the rein, ready to continue galloping for a while.

But when Wu Bin raised his whip, a box of 3+2 biscuits suddenly appeared in front of his eyes.

Wu Bin, who was stunned, turned his head and found that the biscuit was actually handed over by Pei Jiamin.

"Give it to me...?" Wu Bin pointed and couldn't believe it.

And the surrounding students also made booing noises like "Oh~~~". After all, in the high school class, Pei Jiamin's move was quite bold.

"Otherwise, who will give it back? I can't study because of the noise, so hurry up and eat it! Remember to return the box to me tomorrow."

"Oh, thanks."

After saying thanks, Wu Bin took the biscuits.

'This woman really doesn't let go of a chance to humiliate me, forget it, for the sake of biscuits, don't bother with her. '

When the surrounding students heard what Pei Jiamin said, they lost interest in watching the gossip. After all, Wu Bin's tummy yelling was really annoying, and it affected the mood of Pei Xueba next door.

Teacher Qin, who is on duty at the moment, is not in their class 3, and Wu Bin eats more openly, eating several bites in two bites.

'This chocolate vanilla flavor is surprisingly delicious. '

3+2 biscuits of 3 yuan and 5 packs are a luxury for most students. After all, most people think that with this money, it is better to buy several packs of spicy sticks to eat!Well, this includes Wu Bin.

After filling his stomach, Wu Bin continued to gallop, while Pei Jiamin, who had been watching secretly, also hissed.

In fact, she has struggled psychologically for a long time whether to hand over this bag of biscuits. After all, she also knows that doing so will be very eye-catching, but thinking of Wu Bin staying so late in the classroom before and being called away by Teacher Cai, it is very likely that he will have dinner Didn't eat at all.

"Next time! The next time I take the test, I will prove it to you. All my subject scores will be as good as physics."

At this time, the words Wu Bin said suddenly flashed in Pei Jiamin's mind, and when he thought that he might become more desperate to prove to himself, he suddenly felt a little happy.

So with a little courage in her heart, Pei Jiamin handed over the biscuit at once.

Of course, she didn't think about saying the latter sentence, she just blurted it out out of embarrassment after being coaxed by her classmates.

'Hope he's not mistaken...'

Pei Jiamin took a peek at Wu Bin again, and found that he was chewing on books and biscuits, as if he was eating vegetables.

After the matter was resolved, Pei Jiamin continued to work on her own questions, but the corner of her mouth raised a slight arc.

……

After finishing the two trigonometric function problems, Wu Bin confirmed that his ability to read the questions had greatly improved, and he was able to figure out what he was looking for in a short time. This should be the help brought by abstract thinking. It can be said to be very obvious.

However, Wu Bin has not swelled up. Although his ability to solve math problems has been strengthened a lot now, he has not reached the point where once he solves a physics problem, he is 100% sure that it must be correct, which shows that he still needs to work harder.

'But just give me a little more time and I should get the hang of it,'

Wu Bin can have this kind of confidence not only because he is more sensitive to functions now, but also because the note-taking method taught by Liu Yushan is very easy to use. With the two additions, it is only a matter of time before he can fully master high school mathematics.

……

Three days of such a refreshing study passed quickly. On this day, Cai Guoping was standing on the podium and excitedly explaining a question that 80% of the class got wrong.

"So how many times have I stressed to you! If you can conceptually understand the concepts of rate of change and accumulation, the basic laws of kinematics will be..."

Cai Guoping suddenly paused when he said this, because he found that Wu Bin was lying there lying still, instead of making small movements under the belly of the table as usual.

If it were someone else, Cai Guoping would have already flown over with a piece of chalk, but he didn't hit Wu Bin so cruelly. Instead, the first thought that came to his mind was
'Is it too much pressure on this child? If this school fails, I will really commit a crime. '

Cai Guoping naturally believed that Wu Bin would fall asleep in class only if he had overstudied.

So Cai Guoping went to Wu Bin's table early and tapped on the table with the knuckles of his index finger.

But it turns out that Wu Bin didn't respond at all.

Gu Fan hurriedly pulled Wu Bin twice and said, "Wu Bin, hello, Wu Bin!"

"what……?"

Finally, under Gu Fan's tugging, Wu Bin woke up and saw Cai Guoping standing in front of him.

"I'm sorry, Teacher Cai, accidentally..."

"Come out with me!"

Cai Guoping said something viciously.

"Why did you fall asleep..."

Wu Bin rubbed his eyes and followed Cai Guoping out slowly.

The class was still quiet, and the bosses who could get full marks in the exam were all taken out for criticism, so how could they dare to speak up.

When he walked outside the classroom, Cai Guoping looked around and said to Wu Bin in a low voice, "Is it too much pressure? Or you will..."

"It's okay, Mr. Cai, I got high yesterday and didn't fall asleep all night. I'm sorry, I didn't fall asleep on purpose."

Are you learning high?
It was the first time Cai Guoping heard such vocabulary from a student, scratched his hair, and asked, "Are you all right?"

"It's all right, teacher. I've read all the books you gave me. They are very interesting. I will definitely participate in this competition."

"That's fine, don't work too hard, go to the bathroom or go to the office to sleep for a while, you have to understand that the most important thing is your body."

"I see, teacher."

"Okay, then you go."

After Cai Guoping finished speaking, he returned to the classroom.

"Hua Yifei! As soon as I came in, I saw you talking there! What are you talking about!? Did you answer all the questions later!? You will come up and talk about it!"

Hearing Cai Guoping's roar, Wu Bin smiled knowingly. The teacher was naturally partial to him, but he couldn't just let himself sleep in the classroom like this. The vicious acting just now was considered well-intentioned.

(End of this chapter)