A system of ternary indefinite equations? Is it easy to understand?

For Luo Yan, it is indeed very easy to solve. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 info, but the premise is that you are dealing with a group of people who have received high-end education in later generations. What embarrasses him now is how to solve this problem in the words of the Tang Dynasty, and at the same time be able to make others understand. At the very least, it is necessary for Zhang Tong to understand.

Fortunately, this competition did not limit the thinking time, which made Luo Yan a little relaxed, otherwise he would have cried to death.

With his hands behind his back, he paced in front of the desk. In my heart, I was thinking about how to explain it in the clearest and most concise words.

The time for a cup of tea has passed.

Two tea ...... A stick of incense......

Time dragged on, and the people who were still waiting for Luo Yan to solve this problem with great power were already impatient at the moment.

"Dr. Luo, it's okay, no, hurry up and ask the next question. I didn't even eat lunch before I came to watch the excitement, are you worthy of us spectators for such a delay? ”

"Yes, procrastination is not the best way to solve the problem. The best thing to do is to throw in the towel. So, hello, hello, everyone. ”

"Dr. Luo, the students of the state school have called you back to give lectures."

One by one, at this time, you will know that you will open your eyes and tell nonsense. Obviously, everyone took the initiative to come up to watch the excitement, and when they were hungry, they went to eat, and no one stopped them. The students of Mingzhou School were all watching at this time, who said that Luo Yan went back to preach. As for the one who shouted for Luo Yan to admit defeat, he didn't have any good intentions. The famous Luo Yan admits defeat, what a joyful thing this is.

Luo Yan had some egg pain. I'm in a hurry, I really want to say that you can do it. But if you really say this, your reputation will be completely ruined.

However, after such a long time, Luo Yan has not gained nothing, and he happened to think of a way at this moment. Isn't it just a change of yuan and substitution, isn't it just a delineation of restrictions, isn't it just making up a number? I Luo Yan still can't handle you?

Stopped, turned around, and said to Zhang Tong: "My method, maybe you don't understand it, my suggestion, you put pen to paper at this moment." What I say, what you write. When I'm done, if you can't understand it after reading it three times, I'll lose. ”

Some people who know a little bit of arithmetic have grown their mouths at the moment, what is the situation, Luo Yan actually dares to hold it up like this. "Quick, whoever has a pen and paper, lend me a pen." There were suddenly more than a dozen voices of borrowing pen and ink from the crowd, and these people looked at each other, and their faces became a little solemn.

If what Luo Yan said is true, it means that there is a clear solution to the problem of the hundred chickens that has not been solved for hundreds of years from today onwards. This means that not only for arithmetic, but also for other engineering problems can be easily solved. Once the solution is verified to be effective, it will completely confirm that Luo Yan has the strength of an arithmetic master. From a newcomer to a grandmaster, it's just a question of time.

Luo Yan naturally heard the shouts of these people, nodded at the crowd, and said, "It's okay, you can also come and take a look." ”

In a short time, seeing that these dozen people had prepared pen and ink like Zhang Tong, Luo Yan read: "Take a chicken Weng, a chicken mother, and a chicken chick." ”

This is a completely new solution. Luo Yan just read such a sentence, which made the dozen or so people who knew how to understand it ignorant. However, he didn't ask too much, but continued to listen to Luo Yan's words and recorded them word by word.

"A, B, and C add up to 100, this formula. Five A plus three B plus one-third C to get hundred, this two formula. Multiply two by three and subtract one formula to get seven A plus four B to get a hundred. …… Then replace one with four dings, and finally B is twenty-five minus seven dings, and C is seventy-five plus three dings. …… Therefore, there are three sets of answers. ”

Replacing Roman numerals with Chinese is really not a simple matter. Rao is Luo Yan deliberately lowered the speed of his speech, and it took a stick of incense for the people present to record all the solutions.

While the others were still holding the paper and discussing with each other, Zhang Tong walked out of the desk, bowed to Luo Yan, and said: "Dr. Luo's solution is unheard of, and it is gradually verified by the partial life, and it is actually not bad at all. Zhang admired. The implication is that Luo Yan is right.

It turned out that the Zhang family's research on this topic was only a preliminary progress, and it was explored according to some methods in the "Ancient Calculations". In other words, in fact, Zhang Tong himself does not have a clear solution, and what he has in his mind is just a general idea.

Just when Zhang Tong was showing respect to Luo Yan, two or three of the dozen or so onlookers below also stood up, bowed to Luo Yan, and said, "Dr. Luo is highly talented, after I wait for verification, there is no flaw in this solution." In this way, there is really no one before or since. I admire it. ”

More people don't know what Luo Yan is talking about, but listening to these people's praise, they only know that Luo Yan is even more powerful now. Fang Cai's ridicule and teasing were no longer there, but he kept congratulating the people in front of him.

But it's not over yet.

"Alright, I'll leave the congratulations for later. I'm going to ask the question next, Zhang Tong, you have to listen well. "Luo Yan doesn't think that he has won this time just because he solved this problem. No matter how you say it, this is all Zhang Tong's problem, and he solved it by himself, but he didn't lose. If you want to make a decision, you must stump Zhang Tong.

Zhang Tong naturally knew what was going on, and he had already put away his pride, but when he heard Luo Yan say this at this moment, the corners of his mouth could only be filled with a wry smile. Then he didn't say anything, bowed again, and then returned to his case.

But at this time, his fighting spirit was gone. The question of his own ancestor was solved by the peer in front of him, and the other party had to solve the question for himself. Obviously, this disciple of himself is decided. Originally, I thought that there would be some opposition at home, but at this moment, it has become unimpeded because Luo Yan solved the problem. I'm afraid that when the time comes, my father will happily send himself to Luo Yan and press his neck to let himself apprentice.

In Zhang Tong's blind thinking, Luo Yan read out his own question.

"Today there are pheasants and rabbits in the same cage, with thirty-five heads on it and ninety-four feet downstream. Q, what are the geometries of pheasant rabbits? There are more than four ways to solve this problem. ”

This scared everyone who knew how to do it. The heart said that this Assistant Teacher Luo is really bold, and he actually took out the old problems in "Sun Tzu's Calculations" to test Zhang Tong. Who is studying arithmetic today does not know the name of this topic. As the oldest arithmetic book with the longest inheritance, the problem of chickens and rabbits in the same cage does not say that these people are the people who are onlookers, and those who are illiterate know this topic.

One of them asked, "Dr. Luo's topic is too simple, isn't it?" ”

Glancing at the man, Luo Yan turned his gaze to Zhang Tong and said lightly, "What I want is more than four solutions." ”

After listening to Luo Yan's reiteration of his request, Zhang Tongdeng's color changed.

Nowadays, there are only three solutions to the problem of chickens and rabbits in the same cage. Originally, there were two kinds of "Sun Tzu's Sutra", and later people extended one through these two methods. But listening to Luo Yan's meaning, it is obvious that there are other solutions, and there is more than one solution. Looking at Luo Yan with some horror, Zhang Tong did not give up exploring new solutions in his heart. Since Luo Yan is so sure, there is. Why can he come up with it and not himself?

With a slight dissatisfaction, Zhang Tong carefully recalled all the methods he had learned, and wanted to find a novel solution by touching the bypass.

The scene that made Luo Yan embarrassed was repeated on Zhang Tong at this moment. After experiencing Luo Yan's incident, the onlookers were afraid of being slapped in the face by Zhang Tong, so they no longer urged at this moment, but just quietly watched Zhang Tong write and paint there.

Before I knew it, the time had actually come to Shen Shizhong. At this moment, there are more and more people around the gate of the state school, and the bored people begin to explain everything that has just happened to the newcomer, of course, because of the limitation of knowledge, the questions and answers from both sides can only be skipped, and the results and time are hastily said.

It has been almost half an hour since Luo Yan came up with the question. As the sun shifts, the air is also a little chilly. But at this time, Zhang Tong's face was flushed, and his forehead was even more moist, as if he had drunk too much old wine. Everyone knows that Zhang Tong was stumped. To create a new solution in a short period of time, it is not as simple as a child throwing a calculation chip on the ground and picking it up.

Hundreds of years have passed, and people have just found a new solution. At this time, it is really impossible for Zhang Tong to find one on the spot.

After a long time, looking up, Zhang Tongtong stared at Luo Yan with red eyes and said, "In this round, I admit defeat." However, it is too much to use new solutions to embarrass people. Four methods, where is so easy to find. "The voice of the voice is actually a little hoarse." Since I've thrown in the towel, shouldn't Dr. Luo also publish your answers, I'll hear if you've really found the four. ”

Luo Yan smiled: "If you want to hear it, I'll tell you." ”

This title is from the "Sun Tzu's Sutra of Calculations", including a method that has been discovered today, which I collectively call the method of decapitating the head and cutting off the foot. I won't go into details. Next, I'm going to talk about three new methods. ”

Inheriting his usual style, the words are amazing. At this time, someone in the crowd suddenly exclaimed: "What, three, you should think that this is your recruitment of state school students, and you can have as many as you want." ”

"It's impossible, this Luo Yan is bragging again. Three methods, where did he come from? ”

Knowing that you don't believe it, Luo Yan continued: "The first type is also an extension of the head and foot cutting, which I call the hypothetical method. What if it's all chickens, what if it's all rabbits? Chickens always have two more legs than rabbits, so if you calculate the difference, you will know how many rabbits there are. ”

"The second kind is that the rabbit has a one. The third type is a rabbit and a chicken. This kind of method, I said when I explained the problem of the hundred chickens, that is, in the "Ancient Calculations", there are already similar thoughts. You're just limiting yourself to your previous thoughts, and if you think about my solution, you won't be able to find even one. ”

In a word, Zhang Tong was sweating. It's dark under the lights, absolutely dark under the lights. Who would have thought of using your own solution to solve this problem? For a while, even the onlookers were subdued by Luo Yan, as if they were the disobedient students, and were severely reprimanded by the teacher.

And Luo Yan laughed secretly in his heart at the moment, are you not convinced? Why don't you keep your mouth out at this time? That's what I want. (To be continued.) )