Cat's house travels through the notebook of the Three Kingdoms Chapter: Academy Green Onion

Cao Pi and Tangmao had a small quarrel every three days, and a big quarrel every five days has become a routine. With Yuan Xi as the backing, there is no need to worry about being weaker than the other party in terms of momentum. Generally speaking, Tangmao still has a great advantage .However, looking at the posture, Cao Pi is determined to make a complete comeback this time and reverse the decline.

Practice has already proved that the gossip ability of males is definitely much stronger than that of females, especially when there are no female creatures present, this inferiority will be fully displayed.After all, in this era of cannibalism, the illiteracy rate is more than [-]%. With this spare money and time to read and write, the family has more than a little money.As for the struggle between the forces behind Cao Pi and Yuan Xi, many people watched the excitement with the mentality of watching a good show.

Continuing the usual son-in-law style, it was obviously just an ordinary contest, Cao Pi made it serious again, opened up the scene, and opened up the posture.When Tang Mao asked to get the abacus first, he thought it was just a variant of the abacus, so he pretended to be generous and agreed, and incidentally agreed to her request for help. The only condition was that she could not find Yuan Xi, which seemed to be forced The psychological shadow caused by lying in bed for a week.

Cao Pi deduced according to common sense, judging from Tangmao's interpersonal relationship and the strength of his assistants, if Yuan Xi did not appear, "he" could only turn to Sima Yi for help, and against his boss, Ma Yi, in terms of arithmetic, Wang Can was sure to win.Therefore, after Tangmao mentioned the name "Liu Yong", his face suddenly became full of chlorophyll.

In Yingchuan Academy, whenever an old cat wearing a "Liu Yong" vest is mentioned, the initial impression always conforms to the basic characteristics of a cat. It looks natural and harmless, and most of the time it is lazy and absent-minded. In a normal state, there is also the attitude of being indifferent to everything except the sugar cat.The sense of presence is extremely weak.Especially after digging up Xun Shuang recently, he fell into the library whenever he had free time, so that Cao Pi completely forgot the existence of this cat.

But as long as I have a little in-depth contact with her, I will always have a headache and add adjectives such as messy and capricious.Cats are willful creatures. They do most things on a whim without any plans, but they are not the kind of temperamental people. Such qualities as passion, passion, and enthusiasm are incompatible.Especially for old cats like old cats who have sufficient strength, this trait is even more obvious, because they can solve any problems they face with ease, and their bad personality has also risen to a corresponding level.

In addition to defeating Cao Pi with "Luo Shen Fu", he also used a very innocent look to excuse a certain ancient book, quoting "Shi Shuo" which severely dampened Kong Rong's spirit, causing no one in the academy to dare to make trouble for a while. .Afterwards, holding the principle of being irrelevant to oneself, I dived thoroughly, concentrating on trying to find clues from various books, as long as it has something to do with the goal of "going home".

Therefore, only after Tang Mao mentioned the existence of "him" did Cao Pi realize that he was self-defeating and caused a bigger trouble.Different from Sugar Cat’s style of gently stabbing you, Lao Mao tends to either do nothing, or kill the grass and roots if she wants to do it. She never leaves any troubles, so every time the damage she causes is destructive, it is completely in line with her Most people recognize the quality of planting.

Therefore, even though the old cat is wearing a soft and waxy Zhengtai skin, and even Kong Rong doesn't pay attention to her, Cao Pi, who has confronted her head-on and suffered a lot, still dare not underestimate her.Although Cao Pi never teased Tangmao, he always tried his best to avoid confrontation with "Liu Yong".But now, he can only hope that Liu Qiqing's arithmetic level is not as high as his literary level.

When everyone was waiting impatiently, Lao Mao and Sima Yi rushed to the competition scene. The strange thing was that the latter's atypical facial paralysis face was almost in a state of irreversible cramp.

Just glanced at Kong Rong who was the referee, without any intention of explaining or apologizing for his previous behavior of skipping class, the old cat came directly to Tangmao's side and began to dig things out of his sleeves.In this day and age, the main thing to pack things is a parcel made of cloth—so far, the old cat has not managed to pack it up, it’s just a bag—it always slips off the shoulders, and no matter what it is, it doesn’t hold much. It's not gorgeous either.

While maintaining the movement of pulling out, the old cat asked Tang Mao about the lifting situation: "Why did you think of finding Ben Mao? With their math level, even if you beat them, they will not be your opponent."

Mathematics ranks at the end of the six arts, and Confucius could not propose a convincing bibliography as a Confucian classic. Relatively speaking, it was still the specialty of astronomers in ancient times. The current textbook is the famous "Nine Chapters of Arithmetic", and Zhao Shuang himself It is good at proving the Pythagorean theorem, and it is more complicated because it is always connected with "Yi".In short, if a book has been published for four or five years, most of the content will still be marked with an asterisk.

"Old cat~" Tangmao squinted her eyes and smiled treacherously, "Of course I didn't call you here to do the questions, otherwise it's really a waste of the high school entrance examination." She said, and took another look Cao Pi's direction, "The problem is how to effectively burn Wang Can, a talented person. You are more experienced than Miaomiao in this regard."

"Huh? It's not easy, just throw a few questions from the third year of junior high school. Anyway, their level is at most up to the first and second year of junior high school." Lao Mao shook his fan and said disdainfully.

"Do you want Meow to give him a problem of algebraic geometry? People here don't even know what a rectangular coordinate system is." Questions, based on the herd mentality, will judge them to be wrong, and the grasp of the degree is indeed a technical job.

"Could it be that they will do it when I come?" After a long time, she asked the old cat to come over to ease the difficulty, and the latter pouted rather bored.

"It would be nice to replace it with some intelligence test questions." Tangmao wanted Lao Mao to give full play to her advantages as a biological mobile hard drive, and tried to take questions directly from the question bank.But before she finished speaking, she suddenly understood the reason for Sima Yi's cramp—"Old cat! How many things did you bring here?"

From just now, the old cat has not stopped taking things out, and then there is a pocket leading to another dimension like a robot cat. God knows how she managed to put so many things in her sleeves and then Freedom of movement.Without hesitation, he put on a picnic posture on the table, and the old cat replied: "If you take a math test, of course you need to prepare a pencil, rubber, triangle, calculator, scratch paper, and some things to eat, drink and have fun. In order not to be so ostentatious, this cat, A lot of things haven’t been brought yet.” Comparing all kinds of sundries on several cases, even the calculator is a high-end product equipped with CASIO’s solar cells. The cat's words are really convincing.

"Really? Aha, aha, ahaha..." Tangmao changed the subject with a dry smile, and finally understood the reason why Sima Yi's facial paralysis failed, compared with the old cat who was five thousand years old, This little fox is still too tender.And Tangmao's slightly depressed mood at the moment can only be dispelled by hitting the opponent.

The content of the exam is mathematics, and the bibliography is "Nine Chapters of Arithmetic". The author is unknown. It was considered a relatively common textbook in the Han Dynasty. The relatively earlier "Zhoubi Suanjing" is more related to celestial bodies and is not suitable for the popularization of mathematics. , but this collection of exercises with a total of 246 questions has become a common arithmetic textbook in the academy.

As the name suggests, the book is divided into nine chapters.

Fang Tian: It is mainly about the calculation of the area per mu and the calculation of fractions. It is the earliest work in the world that systematically describes fractions.

Corn: It is mainly a calculation method for grain transactions, which involves many proportional issues.

Decay: The main content is the algorithm of the distribution ratio.

Shaoguang: Mainly talk about the methods of square root and cube root.

Business work: mainly engineering mathematics problems such as earthwork and labor volume, mainly volume calculation.

Lose even: more complex proportional problems such as calculating taxes.

Insufficient profit: the problem of double thinking.

Equation: It is mainly the solution of simultaneous linear equations and the addition and subtraction of positive and negative numbers, which is the first time in the history of world mathematics.

Pythagorean: Application of the Pythagorean theorem.

The content of this competition is of course theoretically based on this textbook, including but not limited to the exercises in the book, but for ordinary scholar-bureaucrats, as long as they master the most basic calculations, such as negative numbers or something All are marked with an asterisk.Wang Can was a genuine talent in this era. Not to mention his good writing, he dabbled in Go, mathematics, etc., and was among the best at the time. To be proficient, the Taishi Ling here is not a historian, but the status of the Tianjian in the later generations.

Wang Can's talent is so outstanding that no one else in the Academy can match him.This sentence is still used today because his focus is on people. For cats from 800 years later, this is almost a question of cheating.

In order to keep a low profile and not be used for blatant difficulties, the calculator was reserved as the last trump card.And in this world, Dangdang, an all-round environmentally friendly calculator that can be used in a legitimate and unquestionable manner, is their best assistant.

Adhering to the consistent gentle and one-knife style, Tangmao’s mobile phone pendant is an exquisite little abacus, or the kind that can be toggled. According to the principle of adapting measures to local conditions, students who are purely full and supportive let Dou Fu type accordingly. A wooden one is made of high-quality wood. Now that there are abundant natural resources, huanghuali wood is not sold by the catty. In the end, all the high-quality mahogany is used, and the beads are made of camphor wood. , and emits a faint fragrance from time to time.Young Dou Fu was very interested in the mobile phone pendant as a sample, saying that he had never seen such a fine pattern made by that blacksmith or goldsmith. —Wouldn't it be nice to tell him that the goldsmith he admired was not actually a human being?

In the era when elementary school abacus courses existed in name only, Tangmao's abacus skills were quite good. It could basically simulate most of the functions of ordinary calculators, including finding root numbers.Someone once competed, skilled abacus does not need a computer to be slow. Although Tangmao has not reached that level now, it is not a big problem to reproduce the basic functions. In a sense, it can be regarded as a family tradition.In addition to the pen and draft paper I am used to, in this era, it is not a big problem to say that I am invincible.

But now, the main task is to find out the math problems that meet the requirements of "Nine Chapters of Arithmetic" on the surface, and then change them into the form of application problems that the masses like to see and hear, so as to prevent Kong Rongzai who often pretends to understand when he doesn't understand. Things will always get a little more complicated.

The only solution is to use the absolute strength gap to cause an irreversible ending before he gets involved.

Lao Mao, who has always taken it as his mission to attack human beings, first quoted the topic in the book "I + Mathematics = Smart" a long time ago, asking how many cuts are needed to cut a piece of cake into eight pieces.It is another standard puzzle. Ask ten boxes of gold ingots, one hundred ingots in each box, and one box is fake. The real gold ingots weigh one cent more than the fake ones. How many times should you weigh at least to know which box is the real one? □□?

After adapting the above two questions, Lao Mao felt that his patience was exhausted and he was too lazy to recall more puzzles. According to the principle of early education, he directly changed the middle and high school questions, and chose the normal ones. As long as a person has patience, he can solve the problem of dying.

Since I have always done the last question habitually, in terms of difficulty control, I went straight to the worst direction.

Excusing Fang Tian, ​​I made a junior high school geometry calculation area, but it was made by adding three auxiliary lines to the complicated and dead graphics and using congruent triangles and similar triangles.How difficult is it, at least a little more difficult than the last question of the senior high school entrance examination, but it is already very polite not to use the knowledge of algebraic geometry.

To find the volume under the guise of commercial work, after adding several auxiliary lines, it is necessary to prove that straight lines on different planes are perpendicular to each other, and then find the volume of the inscribed polygon after cutting and repairing.

There are several ways to arrange and combine a question, similar to red ball, white ball and black ball, what to take out and put back, and how to ask.

The last question about the Fibonacci sequence is an excuse to discuss the reproduction of rabbits, ask about the 2008 items of the sequence, and then experience the beauty of the golden section by the way.

Because of those ellipse, parabola, and hyperbolic equations, and because there was no concept of XOY coordinate system in this era, the old cat took it down in the name of reducing difficulty.

In this way, an epoch-making mathematics examination paper was born, which had a huge impact on the development of mathematics in the future, which was not expected by anyone present.

The author has something to say: Take a look at some of the questions that are familiar.

Remember to leave paw prints.