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

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.

One question asks how many diagonals a regular 80-sided polygon has. (Thanks to Yeyue Heiyi for the inspiration)

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.And the epitaph of the famous Diophantus was flamboyantly thrown aside because it was too simple for the old cat.

On the draft paper, all the topics have been replaced with shapes suitable for this era. The old cat put down his pen in satisfaction, patted his paw, and he was done.

The sugar cat came over, thinking that the old cat should not reduce the difficulty too much at once, so that it can be easily made, which will not achieve the intended purpose.But when she saw the exam paper clearly, she immediately collapsed, showing a disgusted expression. "Old cat, are you really sure they understand what you mean?"

At first glance, every question is not difficult, and it can be done theoretically, but if there is no way, even one question will last forever.

The old cat waved its tail proudly, and said: "This cat is already very kind. I changed ABCD to A, B, C, D, and I didn't take out the super complicated factorization. And there is no super-class in every question. Yo!"

Another child who was tormented by the exam and went crazy. He has to pay attention to whether he is out of class all day long.

Since Cao Pi was born to show off, the word "smug and forgetful" originated from Cao Pi's forgetful appearance at the earliest, so this arithmetic confrontation also adopted a consistent and open method.In this era without blackboards, the only advantage is that you don’t need to copy the questions. Anyone who has done class representatives and copied blackboard writing will know how cute it is.

Having said that, such a complex geometric pattern is not clear with just a few words, and eventually we have to go back to the old way of copying the questions.The old cat then took out a by-product of the laboratory from his sleeve - plaster of paris, the chemical formula is 2CaSO4·H2O, which is also used to make molds, but it is one of the important materials for dust-free chalk. Of course, the current technology is still impossible to achieve Dust free.

When the old cat squatted on the ground and used chalk to draw geometric figures freehand, and marked A, B, C, D instead of ABCD in an awkward manner, Zhao Shuang, as well as the teachers of the other courses, were moved by the wind and appeared on the competition field to prepare to watch lively.There are all kinds of excuses. Anyway, counting is the six arts of a gentleman. No matter how unhappy Kong Rong is, he can't kick out the professionals.

It turned out that Yuan Xi instructed a certain student of his accomplice to inform them of these people, in order not to let Kong Rong cover the sky with one hand. Anyway, his identity is a master, and he still has a certain degree of shock in this code of ethics. In the age of power, in fact, his judgment cannot be questioned on the bright side.

Zhao Shuang was originally from a lowly family background, and his main research direction is "Zhoubi Suanjing" (sounds the same as the same period), using the Pythagorean Theorem (also known as Shanggao Theorem) to solve astronomical problems. The person who finds the root formula of the quadratic equation in one variable.Zhao Shuang claimed that he spent more than a day on salary to study "Zhou Bi", and then annotated it. It can be seen that he is an astrologer who has not separated from manual labor.But at present, in order to supplement the family income, he found a job in Yingchuan Academy as an arithmetic teacher. To some extent, he is definitely overqualified.

However, now that the dynasty itself is about to collapse, even the Mandate of Heaven is useless, and the Taishi Order representing astronomy and calendar is even more worthless. What's more, it is very difficult for a common man like him to enter the Tianjian, and he will never be able to live starve.The difference in background, coupled with the fact that Kong Rong actually regards the ranks of Tianxiang as the same status as the ranks of Baigong, always looks down on Zhao Shuang, so the two represent the contradiction between the two classes of scholars and common people.This time, it's hard to guarantee that he didn't come here with the intention of humiliating Kong Rong.

After everyone was in their positions, the game began like this.

In order to finish work and rest early, Tangmao signaled that Cao Pi would ask questions first.Because from daily observations, although Cao Pi herself is "both civil and military" in the literal sense, it does not include mathematics, so she also wants to experience Wang Can's mathematics level in person.Of course, don't look for her for projects like literature or Go.

After hearing Wang Can utter the words "chicken and rabbit in the same cage", the old cat almost fell asleep on the spot--can you please have a little new idea, even if you replace the chicken with a pigeon.He stretched out his paws to cover his face, with an expression of not being able to bear to look any further.

Seeing that "he" was so excited, everyone thought it was the result of excessive depression caused by the difficulty of the topic. Unexpectedly, the next second, the old cat patted Tang Mao on the shoulder, said something to you, and immediately fell on the desk , Without hesitation, fell asleep.

Tang Mao resisted the twitching of his face when he faced the elementary school's column equation solution problem, and with two strokes, he solved the quadratic equation system whose coefficients were all positive integers.Even the abacus and scratch paper are useless.

The people off the court let out a burst of exclamation in distaste. The classic problem that they thought was complicated was actually solved by this boy with the yellow hair around his mouth, and they all expressed their shock.

Tang Mao said very weakly: "Please, continue." Then, when she heard the plus-minus calculation of the plus-minus number, even though she is a doctor who requires calmness and composure, and always pays attention to self-cultivation, she can't help it at this moment. I can't help but want to go crazy-Wang Can, can you stop underestimating the IQ of cats! ! !

The next question is the area of ​​a general trapezoid, and a set of formulas for 1/2 (a+b)h. According to the original method, the calculation of cutting and supplementing is required, but the result appears in the blink of an eye.All of a sudden, envy, admiration, admiration, jealousy, and thoughtfulness, all kinds of eyes are cast like sugar cats, which makes her scalp feel numb, and she suddenly understands that the old cat chooses to fall asleep. What a wise decision.

Next, except for slightly dialing the abacus to replace her usual calculator when calculating compound interest, Tangmao didn't even use much draft paper, which immediately made her punch the cotton a feeling of.Because Zhao Shuang's courses were too basic, the two cats never paid much attention when they were in class. How far is mathematics teaching in this era?Wang Can was one of the best, but the questions he gave were still so powerless.

Feeling quite bored, Tangmao tapped the tip of its claws on the table, indicating that Wang Can can continue to write questions.What kind of speed is this? The cat who solved the problem is faster than the person who made the problem.And every time the answer reported was correct.If he didn't know that it was impossible, even Wang Can himself began to wonder if he had colluded with Tangmao, one for the question and the other for the answer.Before the spectators could react, a contest was over.If you go a step further, it is already a realm for pure laymen to watch the excitement.

It seemed that only Wang Can and Tangmao were left on the field, and no one could intervene in the contest between them. Outside the field, Kong Rong, who was supposed to be a judging judge, was completely lost in the fog and was completely at a loss. .On the contrary, Zhao Shuang became more excited and happier the more he listened, but he was slightly puzzled. Why didn't he discover such a good arithmetic seed before?Along with that, the eyes also became brighter.

Such a boring round (at least in the eyes of Tangmao) has been carried out several times. In Zhao Shuang's eyes, Tangmao almost became the kind of angel with a halo on his head, although I don't know if he has this concept.Originally thought that Wang Can's talent in arithmetic was strong enough, but it's a pity that he is a child of an aristocratic family, and his ambition is not here, so he pays more attention to writing.Zhao Shuang secretly felt a little pity in his heart, but he didn't expect that Li Bai, who thought he could only write articles and was distracted in class, turned out to be an arithmetic prodigy, and suddenly felt that his successor was hopeful.It is true that there is a sky outside the sky, and there are cats outside of people.

From the perspective of all the "potatoes" on the field, apart from Tangmao's hidden secrets, the unknown "magic weapon" that has been fiddled with her claws is also one of the factors of her success.You can get the answer with just a light tap, and many people secretly make up their minds at the moment, they must find out what kind of treasure it is, and if possible, get one for themselves to play with, so that they don’t have to worry about dealing with arithmetic.

However, within two quarters of an hour (an hour is divided into eight quarters in ancient times), this contest that made Sugar Cat feel bored and helpless was finally over. A beautiful home run completely KO'd all the problems.

Finally... finally it's over.

The sugar cat lay on the table and took a breath. After drinking two cups of tea, it grabbed all kinds of snacks that the old cat put on the table. The mouth is used to express the depression in the heart.Then, it's not her problem.

At the same time, among all the humans present, if you look around, you will not be surprised to see a lot of chins, including Sima Yi with atypical facial paralysis and an air conditioner that is so bright that it is so cold that it is out of season in this winter. Yuan Xi is gone.Only time is the most powerful weapon in this world. The power of human beings is insignificant in front of time. No matter how great an emperor is, he will turn into a handful of loess after all. Such a victory is a matter of course.

After eating and drinking, Tangmao smacked her lips, and woke up the old cat who had probably finished playing two games of flying chess with Zhou Gong before, indicating that it was time for her to play.Such a one-sided game is too hurtful.

After Tangmao dominated the audience, it can basically be said that the victory and defeat have been decided, and there is no need to continue.For the performance of the old cat, and the next game, there is nothing to look forward to.

"Well——" Lao Mao yawned and stretched, not caring about his own image at all, his eyes were still sleepy, which was in stark contrast to the tense atmosphere on the field before.

"End?"

"It's over." Seeing the old cat so leisurely, Tang Mao couldn't help being a little upset, and immediately kicked the old cat out as a shield.In the face of such a problem, we must maintain a superficial amiability. The facial muscles are not usually tired. It is estimated that the anaerobic respiration of the muscles has produced a large amount of lactic acid.

"Huh? Then, is there still a need for another match?" Unconsciously flipping the fan in his hand, Lao Mao looked at his opponent.

In the early winter, after several rounds of snow had fallen, Wang Can was forced to break out in a cold sweat.This is the result of inadvertent making friends and poor intelligence.The principle of knowing yourself and the enemy and never ending a hundred battles has always been universal.

Cao Pi gritted his teeth, met the old cat's half-smile expression, and felt that he was being looked down upon. He held his breath and didn't ask Wang Can's opinion, so he made his own decision and agreed: "Compare, don't you? Afraid you won't make it?"

"Is that so?" The corners of the old cat's mouth raised a little higher, "I'm young and ignorant, so I don't need Mr. Cao to be afraid of me." The loss of interest in this farce—there is no one who can be an opponent, life is really lonely like snow~ After a small cosplay in the bottom of her heart, her tone gradually turned cold, "Since the person who agreed to challenge is You Cao Zihuan, don't rely on Wang Zhongxuan blindly later."

Seeing Cao Pi being run over by the old cat's words, Sima Yi's mood was not ordinary. Firstly, it is human nature to gloat, secondly, people like Cao Pi are always at odds with them, and thirdly, finally, there is someone to share with them. His depression is gone.This is Hong Guoguo's anger!Listening to the old cat's tone, "he" clearly has the chance to win. According to past experience, once in this state, the old cat will be "invincible like cutting melons and vegetables" against any opponent.

"Then don't waste time, listen to these questions, you can do your best." The implication is that Cao Pi can't solve any of the questions, and his arrogant attitude comes from absolute strength.

"Hmph, let the horse come here." Cao Pi, who was in the restless period of youth at the age of fifteen or sixteen, had zero resistance to aggressive tactics, and was immediately fooled without much struggle, looking eager to try.

"Don't let me down." The old cat spread out his fan to cover her scheming smile.

Note: There are 100 ticks in one day and night here, and one tick is about 14.4 points, not 15 points (thanks to Yeyue for the reminder, Mr. D has seen it, and I almost misunderstood my children, sorry everyone)

The author has something to say: Don't forget to clap your paws.

Traveling through time and space as a child prodigy really has potential to be tapped.

☆, 16

"Don't let me down." The old cat spread out his fan to cover her scheming smile.

Until now, Wang Can has just recovered from the previous excessive attack. Unfortunately, the overall situation has been settled, but he still tried his best to prevent Cao Pi's impulse: "Zihuan, this is too..."

It's just that Cao Pi's brain, which was already full of blood, couldn't hear the other one at all. He stretched out his hand and signaled Wang Can not to continue: "Hey, Zhongxuan, let me do it, don't you believe me?"

Ju... actually took the bait.Tangmao was speechless for a moment. Such an obvious aggressive method would be fooled, and he could still become emperor just like this. So in fact, the conclusion is that Cao Zhi is more stupid than him?Or do his supporters see him as an easy puppet to manipulate?Thinking of this, Tangmao shifted his gaze to Sima Yi, who was watching a good show.From the current point of view, the auras of the two are not very harmonious, so it really is a relationship of interest?

On the other hand, the old cat who always tended to kill the enemy did not hesitate to throw out the questions he had prepared before, and smashed Cao Pi on the spot.

In fact, these questions are not difficult, but on the whole, if you can't solve a question, your mental state will be affected, so you will feel that every question is difficult. ——The above is that the old cat does not have a backache while standing and talking.

After finishing the question and smashing the person, the old cat patted the non-existent dust on its paws, and signaled to the sugar cat that her task was completed, and the latter gave her an annoyed look.

Then, the two cats happily sat on the side to start today's afternoon tea. Although due to limited conditions, there is still a certain distance from the authentic English afternoon tea, but compared with the situation of another group of people scratching their heads, No matter how you look at it, this picture is very ironic.

So, when Lao Mao took out a silk book from his sleeve and handed it to Tang Mao, and at the same time kept a copy for himself, Yuan Xi finally couldn't help it when the two studied while eating snacks. "Zhongda, did you see how Qiqing packed so many things into his sleeves?" He tugged at Sima Yi's sleeves, expecting a common sense answer, because the scene in front of him had already completely disappeared. Breaking away from the scope of common sense, he was as surprised as Nobi when he first saw the Doraemon Treasure Bag.

However, Sima Yi's eyes wandered for a moment, "Don't ask XX."

After waiting for nearly an hour, I gave the second son Cao enough face, but it is a pity that after the dignified second son boasted to Haikou, he didn't even give the answer to one question. The people in the audience thought it was nothing. It was exciting to watch, and it gradually dissipated.

The old cat looked at his watch and felt that he had given the two people enough face in principle, so he asked Tang Mao with his eyes: "Do you think it's okay?"

Sugar Cat's eyebrows twitched: Ask meow what to do, you can figure it out!Having said that, after looking at the sky, she began to pack up the odds and ends on the case, preparing to evacuate.

Only then did the old cat stand up, stamped its paws, and finally freed its legs from the almost numb predicament, which was another illusion of talent.Looking at Cao Pi who was holding the writing brush and didn't know where to start, and Wang Can who was looking dizzy at the moment by turning the counting chip horizontally and vertically. , so as not to hold grudges in the future, he immediately put on an amiable face and said: "In my opinion, let's go here for the time being, the two of you will go back and think about it, and the answer will be announced tomorrow, what do you think?"

Taking retreat as a means of advancing not only saves their face (probably), but also makes them spend more time entangled. The old cat's conscience is greatly damaged.

"The first question is four knives!" Seeing that the old cat was about to leave, Cao Pi was in a hurry. He felt that it would be too embarrassing if he couldn't answer a single question. I didn't feel confident about the simple questions, and at the last moment, I managed to squeeze out an answer.

"Oh? Cao Zihuan, are you sure?" With the handle on his mouth, the old cat looked at Cao Pi with great interest, "Are you sure?" Then he asked again, just like the evil hosts in those intelligence shows, very It is not enough to ask the correct answer of the contestant to be the wrong answer.

"...sure!" Cao Pi gritted his teeth and made a decision.

"It's a pity, you were fooled. Cao Zihuan, you might as well think again when you go back. Is it because you have been restricted by the old rules and narrowed your horizons?"

"Wait a minute!" Wang Can stopped the two cats who were about to leave, hesitated to speak, and finally made up his mind to ask, "Liu Qiqing, can all the problems here really be solved?" I thought the old cat was fooling him with some unsolvable questions.

"Of course, these are the simplest questions, basically they belong to the difficulty of mowing grass." The old cat raised his eyelids slightly, looking a little dissatisfied. Could this cat still use the four-color conjecture or Fermat's last theorem? Things to test you can not?Is this cat's RP that bad?

Tangmao turned his face away, ignoring Laomao's upright nonsense, the progressive difficulty coefficient, the kind of geometry problems that need to add more than one auxiliary line, only for students who struggle to survive in the sea of ​​questions every day They will be the basic requirements. For the people from the Three Kingdoms whose root-finding formula of the quadratic equation in one variable only uses the positive coefficient of the first term, ahem...

Although suspense was left at the end, people with discerning eyes saw that the outcome of this competition had already been decided. Even if Wang Can or Cao Pi answered all the questions tomorrow, it would still be a victory for the two cats.So as an excuse to celebrate the victory, Yuan Xi dragged two more cats out for dinner to celebrate, but judging by the posture, the old cat was purely incidental.

However, during the dinner, Sima Yi surprisingly couldn't suppress his curiosity, and asked first, "Old Mao, the questions you asked Wang Can and the others today are really the most basic requirements?" He had paid attention to Tangmao before. The expression on his face was not like that at all.

"Except for the question about the breeding of rabbits." Tangmao thought for a while, only the Fibonacci sequence is marked with asterisks. If the old cat answered, it would probably be literal, all It's all about mowing the lawn.

"The problem of cutting cakes can't be because of your deliberate expression, old cat? Although Cao Zihuan is not very smart, you can't turn black and white, old cat." Yuan Xi revealed the truth very clearly.

"Tsk tsk, it turns out that Xianyi and Cao Zihuan are on the same level." The old cat shook his head and sighed with a look of helplessness.Resting his chin with one hand, the tip of the other claw lightly touched the table, and turned his gaze to Sima Yi: "Zhongda, what do you think?"

"The way a husband behaves in the world, that is, the art of adapting to the situation, can he be paranoid. The way of using soldiers is the same. It all depends on adapting to the situation. After all, Cao Zihuan is too far behind." The sweet-scented osmanthus cake successfully dismembered his body and recovered his signature atypical facial paralysis, and asked, "Are you satisfied with XX's answer?"

Papapapa, the old cat patted its paws, and replied solemnly: "Congratulations, you have reached the level of the first grade in elementary school."

The next day, the old cat didn’t even bother to explain, and directly posted the answers to the exercises that Guo San had translated and copied all night to the bulletin board. If there is any news in the academy on weekdays, it would usually be posted here. Anyway, everyone here is literate. .But what about the effect? ​​Except for a few people who were thoughtful after watching it, most people saw it in a cloud of fog, and for a while, they didn't know what to say.

On the contrary, Tangmao's place is surprisingly lively. Most people come to ask her what kind of magic weapon she used to solve the problem yesterday.Through the past experience of Mi Torch, the students of the academy all know that Tangmao can buy fake versions of Miju at black market prices, so Tangmao's popularity is not ordinary.

It's just that when they heard that the machine had to learn the formula again, these impatient guys ran away again.Tangmao was very resentful. If he had known it earlier, he would have made a batch of calculations first, with a formula attached to it, and sold it to make a profit first.

In addition, Zhao Shuang ran over with a moved face and asked Tangmao if he would cooperate with him to discuss the calculation of pi, but was rejected by Tangmao with black lines all over his face. She memorized the five digits of No.30 after the decimal point, but the specific verification work was entirely up to Zhao Shuang himself.

As for the old cat who stayed out of the matter, her so-called basic requirements for those questions were included in the revised version of "Nine Chapters of Arithmetic". In fact, this thing is a set of exercises, so it has been revised and has become the finale of the legend .At the same time, it also opened up new ideas for Chinese geometry research, so that smart Chinese people don't have to make a fuss about basic knowledge such as "Elements of Geometry".

Because of this competition, Wang Can's self-esteem was hit hard, and he also reflected on the behavior of being attached to Cao Pi during this period of time, so he decided to travel around the world to increase his knowledge and broaden his mind.In fact, this is just a trick that rich people like him can afford.Soon after, he settled down at Xiangyang Academy and joined his fellow countryman and grandfather's student, Liu Biao, governor of Jingzhou.Later, Zhang Xian, the prefect of Changsha, betrayed Liu Biao. When Liu Biao sent troops to conquer, Wang Can wrote "Sanfu Lun" for him, which was widely circulated and became one of the important documents to publicize the legitimacy of Liu Biao's sending troops.

It's just that the development of things is too far from his expectations.Although he was born in a prominent family, he is a well-known talent all over the world, and he has a deep relationship with Liu Biao. He thought that under Liu Biao's command, he would be able to realize his ambitions, but in the end it was his famous novel "Ode to the Tower". .

All of these things were unexpected by the current Wang Can.

And Cao Pi, who felt guilty in his heart because of the friends involved in this incident, has never troubled Sugar Cat with such a big fanfare like this time.The rest of the small troubles only need Tangmao’s own flexible response to get through it. According to Tangmao’s words, the role of the old cat is like a radar—mosquito kill kill kill, at least it can guarantee the cleanliness for a period of time up.

In fact, the consequences of today's game are far from being as simple as they appear on the surface, and greater opportunities and challenges have come to the two cats again.

In the library of Yingchuan Academy, the old cat is here to study by himself as usual, hoping to find clues about the chaos of time and space, and this matter can only be relied on by himself.If you tell the consequences of the past, it is simply unimaginable.And Xun Shuang never asked the old cat what he had read and what experience he had, but when the old cat asked, he gave his own answer appropriately.But today, uncharacteristically, he drove the cat early, "Come here today, go back early, there will be surprises. Oh ho ho ho..." The old man stroked his snow-white beard without a trace of variegation, and smiled very happy.But the old cat murmured in his heart, wondering what kind of medicine was sold in the gourd?

The sun had already set to the west, and the old cat returned to the small courtyard where he lived temporarily.According to common sense, at this time, you should already be able to smell the aroma of all kinds of food, but today there is no cooking smoke.Not only did Tangmao fail to show his skills, but even Guo San and Guo Si did not shoulder the heavy responsibility of cooking dinner.What happened?

Instead, what reached the old cat's nose was a fragrance that he had never smelled before. It was different from the agarwood that Zhou Yu often smelled, and it was a more complex fragrance.The old cat sneezed unaccustomed, usually due to the needs of work, and understands that the so-called aromatic hydrocarbons are benzene, if inhaled too much, it is not good for the health, and habitually stays away from the incense habit of this era, so suddenly Had some allergic reactions after smelling it.

For this taste, the ingredients include fine borneol (also known as ambergris), musk, olive oil... the rest is too complex to smell.The well-tested old cat in Huajia Village reflexively analyzed the contents of this spice, but the words "chicken crowing and five drums returning to the soul" popped out of his head out of time, and suddenly he thought it was not right, otherwise the inside There shouldn't be ice flakes, and it would be too extravagant to use such materials to make Miyan.Musk alone is ten times the price of gold, not to mention the finest ambergris.

Having said that, the old cat was still a little worried. After thinking about it for a while, he took the most direct method to solve the problem.

I saw the old cat PIU kicking the door open, but no one came to welcome him?Then in a voice as loud as possible without feeling unnatural: "Sugar—what are you doing!" She uses the basic principle of being guilty, even if she is trying to do something bad or is doing something bad , always unavoidable guilt, mental state is affected, if you suddenly hear such a huge change, it is inevitable to be caught off guard, as long as there is a gap, then even if the sugar cat is temporarily weak, you can seize the opportunity to turn salty fish .

The author has something to say: May wish to guess who is coming?

I'm sorry, I've been a little depressed recently, and I don't know if I encountered some unspoken rules.

Considering that tomorrow is Chinese Valentine's Day, I still posted a chapter tonight. Due to the spoiler issue, there is no special about Chinese Valentine's Day. I'm sorry, please let me take a break for the time being.

Correct the typo, and by the way, change the words of Sima Boss into the original words in history.