Chapter 23 Mathematics II

PS: Thank you for the recommendation votes of the desolate and peaceful, fun, and lonely at home. In the future, if there are no accidents, the update time is usually around 10 am or 9 pm.

Every time the facts prove an eternal law: sooner or later, you will have to pay it back.

When the eldest grandson was still tasting tea, the spirits below had already reacted, and the voice gradually became louder.

"This weird symbol really works." This sentence speaks to the hearts of many people, but everyone looks at the source of this voice with the eyes of an idiot.

If someone says what everyone knows first, although we will say the same thing in our hearts, it may as well be that we despise his shallowness, so the older we get, the less we say in front of strangers, and this may be the price of growing up.

"But that doesn't mean he can despise us who study arithmetic, does he know that 'chickens and rabbits are in the same cage'? Know the problem of transporting rice? Do you know the problem of 100 dollars and 100 chickens, 100 monks and 100 steamed buns? "This is obviously a student from Guozijian.

Although arithmetic is an institution specializing in the study and study of arithmetic, Guozijian will also study these, and due to the problem of the origin of students, the students on both sides will often argue, and the problem of "chickens and rabbits in the same cage" that this eldest grandson relied on to become famous did not know.

The voice grew louder and louder, and finally someone stood up and was ready to question Changsun Tang.

"'Chickens and rabbits in the same cage' reconciliation?" There are only six words, as if one more word would be a waste of time.

"Is anyone willing to answer this question?" The eldest grandson looked careless, since he was going to pretend, then be thorough, so as not to waste energy on these inexplicable things every day.

"I'll come." The following arithmetic students have come out to solve this problem, and the answer of the eldest Sun Tang has now been regarded as a classic.

"This is not the answer of the sixth son!" Some people below are starting to make noise.

"This is the answer given by the eldest grandson when he entered the school four years ago." The student just received it.

For a moment, the scene was cold.

Four years ago, the eldest grandson was only twelve years old, and he could solve this problem at the age of twelve, and it was an all-round and multi-angle solution, which really has respectable capital.

"What about the 100 chickens and 100 dollars?" Naturally, some people do not believe it, and raise the problem of this system of binary equations to the level of a system of ternary equations.

The question is to the effect that each rooster is worth 5 yuan, each hen is worth 3 yuan, and every three chicks are worth 1 yuan. 100 dollars to buy 100 chickens. How many roosters, hens, and chicks are there?

This is a problem of indefinite equations, but the combined answers are all integers, so that four sets of answers can be obtained.

Ordinary people can get one or two sets of answers, but Changsun Tang lowered his head and wrote all the four sets of answers accurately on the freshly baked blackboard in a short time.

There was the sound of cold air from below, but there were still unbelievers.

"The water of Pingping Lake is clear and can be seen, the face is half a foot of raw red lotus, the mud is not stained, the pavilion is standing, suddenly blown by the strong wind, the fisherman is busy looking forward, the flower is two feet away from the original position, can be counted as the gentleman, please solve the problem, how to know the depth of the lake." This is an ancient Indian topic on the Pythagorean theorem, which is mixed with knowledge of geometric figures.

Before the trilateral relationship of the right triangle is clarified, the method of test value can only be used, which is more difficult.

"The question that Zhou Gong asked Shang Gao can be found in the "Zhou Ji Sutra". It's been so many years, and the eldest grandson has finally learned the way of speaking of the Tang people, whether it's right or not, first take the words of the sage to squeeze you, I represent the sage, you doubt me is the sage of doubt, this method is unsuccessful.

Changsun Tang turned around and drew a few strokes on the blackboard to calculate the result, but when the bunch of people at the bottom were still confused, Changsun Tang reported the correct answer.

"That's right. But how did you figure it out? The person who asked the question cleaned up the tsundere and surprised, the standard black-to-pink routine.

"It's a little difficult, but you'll understand it when I write the second volume of 'Mathematics', "Equations", and the third volume, "Geometry." It's a great time to advertise.

"Oh, can you lend me a look?" The tone was a little weak, and he also knew that this could exist as an heirloom, and it was basically a very advanced family study, and it would be good to be able to show it.

"Okay, it'll be printed when the time comes, and you can borrow it from the library, or you can buy it there." The eldest grandson broke their cognition.

"What, this can be bought?" I was so surprised that I didn't even ask the price.

"Yes, as long as it is a Datang person, you can buy it." The noise below exploded.

"You're saying Inhumans can't buy it?" A man with slightly gray temples asked.

"Yes." The eldest grandson replied.

"Don't worry, who knows if you happen to know the answer." These questions are the basic problems of arithmetic, and there are many people who study them.

"Oh, what other questions do you have?" The eldest grandson was not angry, just because it was not necessary.

The dog bites you, you can't bite back No, the eldest grandson had a smile on his face, and he said in his heart.

"This, I haven't thought of it for the time being, I'll ask you for advice another day." It's purely a spectacle.

"Oh, cut!" The crowd below is a little disdainful, and the same position does not mean that they have to be shameless to suppress for the sake of suppression.

"Hehe, okay. As long as I am in Chang'an, I will be waiting for you at any time. The eldest grandson was still smiling.

After such a hiatus, the people at the bottom have no interest in asking questions, most of them are experts, and they don't know the details of the eldest grandson.

"Hehe, Xiaoyou is good! Can this method of counting be spread all over the world? "It's the same questioner with gray temples.

The eldest grandson looked at it, this old man's bearing is extraordinary, and he faintly has the kind of bearing of the eldest grandson Wuji, but it is better hidden, and it shows more of that affinity.

"I don't know what my husband is called?" The eldest grandson was not reckless.

"Old man Fang Qiao." Only four words.

"I don't know what to call him?" The surname of Fang is still relatively rare, so the eldest grandson has this question. Of course, he hasn't said Fang Xuanling's name directly, after all, it is still a basic etiquette for the Venerable in this era.

There was a lot of commotion at the bottom.

"Hehe, Xiaoyou is also interesting. If there's only one, you're talking about me. The old man was still smiling and groaning.

This is a big mess, who knew that this Xuan Ling was actually a word, and Qiao was a name.

This is a bit of pointing at the monk and scolding the bald donkey, no wonder the voice is so loud underneath, and the face of the eldest grandson is also a little red at this time.

"The little nephew asked Uncle Fang for peace." The eldest grandson immediately got off the podium and greeted Fang Xuanling.

"It's okay, it's okay." Fang Xuanling waved his hand, indicating that it didn't matter.

"The little nephew was a little abrupt, and he came to apologize to his uncle another day." This is a must, this met the good-natured Fang Xuanling, if it was a different person, I don't know how big the basket would be.

"What about what I just mentioned?" Fang Xuanling will no longer be too entangled.

"Oh, okay. No problem, another day, the little nephew will come to the door in person to explain to the uncle. ”