Rebirth: I Carry A Desktop Computer Inside Me - #3 - Chapter 3 We Obviously Agreed To Work Together, But You Secretly Changed Your Mind

886×886=784,996

Get the answer in seconds.

666! =1010632056840……

Okay, this calculation is a bit heavy, and it takes a few seconds to react.

However, after several experiments, Jiang Cheng also discovered that when faced with these functional problems, he could not directly calculate the answers in his mind. Instead, it still relies on problem-solving ideas.

Although it has flaws, Jiang Cheng is still very happy. This is another boost for his hope of getting into a 985 university.

Chen Guoqing began his lecture unhurriedly. Whether it was simple or difficult, he explained everything in detail.

Jiang Cheng only experimented for a minute before he immediately gave up and followed Chen Guoqing to solve the questions one by one.

The first multiple-choice question, but Jiang Cheng just saw it.

“This multiple-choice question should be very simple. In fact, it means substituting n+1…” As he spoke, Chen Guoqing listed the calculation formulas on the blackboard.

It is known that f(n)=1+1/2+1/3+…+1/3n-1

We can get f(n+1)=1+1/2+1/3+…+1/3n-1+…1/3(n+1)-1

“Then, subtracting the two equations,…” Chen Guoqing took the trouble to list the terms.

Jiang Cheng also understood in his heart, so it was like this! In Jiang Cheng’s mind, he instantly completed the several terms in the ellipses, subtracted the two terms, and eliminated the repetitions, leaving only the extra terms.

Although the independent variable “n” exists, it does not affect the calculation of numbers in Jiang Cheng’s mind.

“Then, the answer is choice C.” Chen Guoqing wrote the result, “Who else doesn’t understand the solution to this question?”

Most people have no problem with this simple calculation, and Jiang Cheng also understood it.

After everyone was silent for a long time, Chen Guoqing continued to talk about the second question.

Jiang Cheng also continued to follow, because he had not read books in some years and had done the questions. When he first saw these questions, Jiang Cheng was a little confused.

But now that he had entered a full-body study state, Jiang Cheng realized for the first time that he was not stupid at all and could understand.

These problem-solving ideas became vivid instantly with Chen Guoqing’s step-by-step answers.

But after all, Jiang Cheng still didn’t master a lot of mathematical knowledge, and he didn’t even study it at all. The later questions began to become more difficult. Even after listening to the lectures, Jiang Cheng was confused about some knowledge points.

But at this moment Jiang Cheng was not distracted and absorbed the knowledge flowing from the questions wholeheartedly.

Sitting in the last row, with the tall stack of books, no one noticed Jiang Cheng’s change.

Even Qin Jin didn’t care whether Jiang Cheng was attending the lecture or not. He became serious about reading without any distractions.

By the time get out of class was over, Chen Guoqing had already talked about the first big topic.

This is a function question that also involves vector and other knowledge. Chen Guoqing explained it in detail, but Jiang Cheng still lacked many knowledge points.

Others may take it for granted that from A to B, it is easy to get C, but Jiang Cheng does not understand.

Can’t turn around.

The entire class nine was not very good at mathematics. Only Chen Hao and a few other students were slightly better. The rest were basically above or below the passing mark.

Science and mathematics in high school are still a bit difficult. Many of the questions are changeable, and the knowledge points tested are mixed. Sometimes the difficult questions are almost like Olympiad questions.

After class, everyone became silent and many started chatting.

Chen Guoqing has a good temper and no one is afraid of him. But during class, no one dared to speak.

Because mathematics is so difficult, everyone is afraid of being caught by Chen Guoqing to do the questions.

Among the questions mentioned previously, Jiang Cheng still didn’t understand two of them very well, so he immediately walked up with the test paper.

“Teacher, I don’t understand this question a bit.”

“Oh, which one?” Mathematics teacher Chen Guoqing put his reading glasses on the bridge of his nose and took the book. Then he realized the strangeness of the voice and looked up.

“Jiang Cheng?”

Jiang Cheng smiled awkwardly, “Teacher, you still remember me.”

“First place in last place for two consecutive years, I’m impressed.” Chen Guoqing said with a hint of saltiness, and turned to look at the question.

Well, the last place can also be remembered.

“This is a typical yuan-changing method.” Chen Guoqing spoke unhurriedly and his voice was not high, but very steady.

Oh, I see!

Under Chen Guoqing’s detailed explanation, Jiang Cheng’s thinking suddenly changed.

“Jiang Cheng, if you want to improve your math scores, it’s best to go through high school math carefully, do all the examples, and try to score some easy questions.” Chen Guoqing expressed his gratitude to Jiang Cheng for taking the initiative to ask questions. The question was still very gratifying. After answering the question, he gave the instructions seriously.

“Okay.” Jiang Cheng naturally responded and then left the podium.

Many people in Class 9 looked at Jiang Cheng coming back from the podium in a daze.

Weird, Jiang Cheng, who relies entirely on mathematics, actually asks the teacher questions?

Could it be that the sun is coming out from the west?

Jiang Cheng didn’t bother to pay attention to them. Because of his status as a poor student in his previous life and his arrogant appearance, he had no friends in the class. Later, he was not admitted to college and had no interactions with his classmates.

Therefore, Jiang Cheng had no intention of making friends with them in this life.

Returning to his seat, Jiang Cheng immediately picked up the first-grade mathematics and prepared to take a look at it first.

Qin Jin suddenly felt that reading was boring.

He looked at Jiang Cheng with some resentment in his eyes.

We obviously agreed to go work together, but you secretly took it seriously.

Have you changed your mind?

Jiang Cheng turned a blind eye and read the book quickly. By the time the school bell rang, I had already flipped through more than ten pages.

I put the book away and continued to think about it. Sure enough, all the Chinese and mathematics knowledge I had read before could be remembered and came to my mind.

Continuing to follow the rhythm of Chen Guoqing’s lecture, Jiang Cheng felt even more strenuous. Especially the last two big questions, one about analytic geometry and the other about sequence, were not very clear to Jiang Cheng.

After finishing the topic, there are still about 10 minutes left. Chen Guoqing asked everyone to sort out the wrong questions. If you have any questions, you can ask them freely.

Jiang Cheng did not go up to ask questions this time. He already felt that his mathematical foundation still had many weaknesses. Just doing the questions will not achieve much effect.

At the moment, Jiang Cheng picked up the math book and continued reading chapter by chapter.

Jiang Cheng paid more attention to the examples in the book. You must go through it several times in your mind and compose some similar questions on your own so that you can fully understand it.

The time when you devote yourself to studying always passes quickly, and before you know it, the morning is over.

Because it was the senior year of high school, many students were meeting on campus or nearby for meals, and some even rented a house next to the school, just to prepare for the college entrance examination.

Jiang Cheng’s family lives in Nancheng, which is a bit far away from Guanglin Middle School. Although my grades were not good, I still had lunch at school like other students.

“Let’s go, Chengzi, let’s go eat.” Qin Jin had been feeling uncomfortable for a long time after sitting for a long time. As soon as Chen Guoqing left, he immediately jumped up and pulled Jiang Chenggong to leave.

“I’m not going.” Jiang Cheng shook his head and sat firmly in his position.

At the beginning, the cafeteria was crowded, and it took a long time just to queue up. With all this time, I might as well read a book for a while.

Taking out Yu Xinran’s Chinese notebook, Jiang Cheng planned to read it for a while before going to have something to eat.

Qin Jin was relatively thin and could not move Jiang Cheng. He felt extremely hurt at this moment. “Okay, I’ll go eat by myself.”

As he walked away, he took two steps and turned back, looking like an abandoned and resentful woman…

After a while, all the classmates in the class were gone, and only Jiang Cheng was left.

The quiet classroom with the noisy ceiling fan is very suitable for studying.

Jiang Cheng has never been so eager to learn at any time. Especially with his photographic memory, he urgently needed more knowledge to fill his mind.

One page, two pages,…, ten pages,…, twenty pages.

Juanxiu’s notes were firmly remembered in the depths of Jiang Cheng’s mind. As long as he recalled them for a moment, he quickly found his imprint.

After studying like this, half an hour passed, and the classmates in the class came back one after another.

Qin Jin also arrived at this time, with a depressed look on his face, and handed over the contents of the small white bag in his hand, “Hey, I knew you wouldn’t go to eat, so I brought you some big steamed buns.”

“Okay, thanks, brother!” Jiang Cheng was not polite. When he came to his senses, he happened to be a little hungry.

The steamed buns were a bit cold and hard, and with the water on them, Jiang Cheng ate them quite deliciously.

Qin Jin sat down and said, “I feel like you are really crazy and don’t even want to eat. Could it be that you are possessed by a ghost…”

Jiang Cheng was stunned for a moment, “What are you thinking about, kid? Can’t you say that I suddenly became enlightened?”

“Have you had brain surgery?”

“…”

Jiang Cheng decided to ignore him.

At noon, there were 58 people in the class, and about two-thirds of them did not go home. Some were lying down to rest, while others continued to read books.

When Qin Jin saw Jiang Cheng starting to bite steamed buns and read a book again, he naturally knew in his heart that he was not just showing off, but was serious about it.

He originally wanted to read a novel, but after thinking about it, he took out a math book and planned to read it too.

ヽ( ￣д￣;)ノ

Those messy numbers, letters, and formulas popped up from all directions, spinning in circles in front of my eyes.

“Snapped”

Qin Jin lay on the book, closed his eyes and fell asleep…

In the quiet corner, there are only the sounds of books being turned, and occasionally the sounds of burping dry steamed buns and snoring in sleep.

After spending noon, Jiang Cheng had read through all of Yu Xinran’s notes.

The gains are naturally great, and Jiang Cheng expects that his Chinese language skills will be improved by at least twenty or thirty points. After all, it’s impossible to test all the original questions on the notes.

In the remaining time, Jiang Cheng did not review anymore, but squinted slightly.

Although he was young, he stayed up all afternoon and felt somewhat sleepy.

In the afternoon there are English and biology classes.

The English class also taught test papers, but Jiang Cheng didn’t listen to them. Instead, he took the high school English book and passed it all.

I have memorized all the high school vocabulary, which is helpful for Jiang Cheng to understand a sentence.

But in English, relying solely on vocabulary is not enough. There are also factors such as grammar, slang and so on. Moreover, a word may have many other extended meanings. If you just translate the English word into Chinese to understand it, you will not understand it.

Coupled with the sometimes lengthy and inverted attributive in English, it is even more confusing.

Jiang Cheng also understands that English is more particular about vocabulary and language sense, and these can only be learned through normal accumulation and practice.

As for living things, the content of memory is also relatively large. Some people even think that biology has been attributed to the liberal arts, and geography should be attributed to the sciences.

Therefore, Jiang Cheng memorized all high school biology, which gained him a bit of confidence.

Looking at the pile of books in front of me, most of them are textbooks or test papers. There are some tutorial books that I bought together when I was a freshman and sophomore in high school.

It’s time to buy some supplementary books.

Five years of college entrance examination, three years of simulations, etc. You have to prepare a set of these, right?