"What's wrong?"

Li Shimin's voice came from behind him. Li Mu suppressed his anger and turned to smile and said, "Your Majesty, the quality of the pen in my family is too bad. It doesn't matter, it won't be delayed."

Li Mu turned his face, the smile on his face quickly calmed down, and said in a low voice: "If you two have never finished asking, you will know the solution for your rest in your life. Now I say, you two listen, if you don't understand, think about it yourself, don't ask me again!"

Seeing Li Mu being angry, Li Chunfeng and Li Tai didn't dare to ask again. There was no way. Who would let him know the solution to this problem by himself now? If you are really angry, you won't teach me. Who can do anything else? Even if the emperor hires a teacher, the teacher will agree, right?

"In this question, there are three unknown numbers, namely rooster, hen, and chick. The three are combined, with a total of 100. Now I assume that roosters have a and hens have b, so I can get the number of chicks."

Li Mu wrote a, b and 100-a-b and said, "You have read the Tang Dynasty Daily. Can you understand it by writing this way?"

"Brother..."

Li Tai wanted to ask a question, but Li Mu didn't give him the chance to ask questions at all. He continued to preach: "I also know that roosters are worth five, hens are worth three, and three chicks are worth one, a total of one hundred. Then we can come up with this equation."

Li Tai really wanted to ask what unknown number is and what equation is, but when he saw Li Mu's attitude, he didn't dare to say anything. He looked at Li Chunfeng quietly. Seeing that he seemed to understand, he not only sighed in his heart, but he was worthy of being Master Chunfeng, who could understand it.

In fact, Li Chunfeng had only a slight understanding, but he really understood a little more than Li Tai. At least he could understand what the equation meant. Before he came, he carefully studied the symbols designed by Li Mu and knew that the equation should probably mean that the values ​​on both sides were equal.

“5xa+3xb+(100-a-b)x1/3=100”

Seeing this, Li Chunfeng finally couldn't help it and said, "Mr. Marquis forgive me. What is the purpose of this diagonal line? There is no one among the four operation symbols."

Li Mu endured the refractory and said, "Three chickens are worth one, so how much is the value of a chicken? Of course, one is divided into three, but can one be divided into three? No, because one is smaller than three. So how should I represent this number smaller than one? So I invented the concept of 'fraction', and the score is also the score. The above is the number being divided, and the following is the number of parts. Do you understand?"

Li Chunfeng suddenly realized and quickly said, "I understand, I understand."

Li Mu was about to continue talking, but suddenly hesitated for a moment. Is it really appropriate to improve the level of contemporary mathematics at one time?

The development of all human disciplines is caused by human needs. The same is true for mathematics. The slow development of mathematics in ancient times was not the degree of evolution of human beings, but the degree of demand for human beings. In ancient times, there were few people, few resources, and few calculations needed. Therefore, there was no need for too much spiritual mathematics, and people could not imagine the abstract part of mathematics.

But does this mean that the ancients were stupid? Of course not, it was just that the ancients used their talents elsewhere. If they forcibly elevate mathematics to a higher level, Li Mu would not think it would have much effect, and would be noticed and be regarded as a monster.

No, I still have to control it.

After making up his mind, Li Mu did not list the second equation, but adopted the exhaustive method.

Li Mu pointed to the equation and said, "We think this equation, 5xa represents the money spent by a rooster, 3xb represents the money spent by a hen, and we can draw the money spent by a chick from (100-a-b)x1/3. At the same time, we can also obtain three information based on the question and this equation."

"The first one, the number of chicks can be divided by three."

"The second one, a and b and the number of chicks, are all numbers larger than zero."

"The third one, a and b, and the number of chicks, is an integer."

Li Tai asked cutely: "Brother, what is an integer?"

"Integers are numbers like one, two, and three, complete numbers!"

"Then why can't it be a score? Just like the amount of money you mentioned in the chicks..."

Li Mu's face turned gloomy, he raised his hand and knocked on Li Tai's fat forehead, cursing: "Have you seen half of the live chicken look like?!"

"I..." Li Tai opened his mouth and suddenly reacted, feeling ashamed. Yes, there are only whole live chickens, but no half of them, how could he ask such a dementia question!

Li Mu continued: "In this way, we can start with the chicken. You have seen the division in the Tang Dynasty Daily. We use three as divisors and divide them one by one, and we can get some multiples of three."

"This is the first step. Let's calculate all these numbers and put them aside."

"Then the second step. Let's assume that all the money comes to buy roosters, so how much can you buy if you do a long rooster? Divide one hundred by five, up to twenty. However, the question requires chicks and hens, so it is impossible to be twenty, up to nineteen. Among the three messages obtained above, the number of roosters is greater than zero and is an integer, so the number of roosters is between one and nineteen."

"Then hens, and so on, we can get the number of hens, which is an integer greater than zero and less than thirty-three."

"Finally, we can start to try. Start the test from the maximum possible multiple of the chicks, and subtract the resulting value by one hundred, which is the total number of roosters and hens added together. A total of thirty-three trials can be obtained, and the correct answer can be drawn."

Li Mu said, throwing his pen and saying, "I won't do it myself. Master leads me to practice. If I teach you step by step, you will never learn it. It is better to teach others how to fish than to fish. I have given you the method, so you can try it yourself."

Li Tai was still a little confused, but Li Chunfeng could hear some clues. As for what Li Mu said, it was not a problem for him to calculate thirty-three times. In order to understand the question of the Hundred Chicken, he had calculated thousands of times, but he had never solved it. Li Mu had pointed out the trick. Calculation with a goal is better than a headless fly bumping around. He immediately stood up and bowed to Li Mu, saying, "The Marquis has not only solved the question of the Hundred Chicken, but also invented his own unique set of algorithms and symbols. With this, he is worthy of being the first person in the world of math." After that, Li Chunfeng bowed to Li Shimin again and said, "Your Majesty, in front of the Marquis, I really don't dare to be the master of math. I also asked Your Majesty to tell you this name and give it to the Marquis so that I can feel at ease."

Seventeen-year-old grandmaster?

Li Shimin glanced at Li Mu and said, "Chunfeng, I know your ability. Two years ago, you annotated ten calculation scriptures, and the government and the public admired your achievements in mathematics. The name of this great master cannot be regarded as given to you by me, but your own ability. Now you are going to give this title to Li Mu. He just solved a question. Do you really deserve this reputation?"

Li Chunfeng said seriously: "Your Majesty, the marquis' talent is the only one in my life. I don't care about other things, but in analytical studies, the marquis is far more than me. Your Majesty may not know that the symbols and his four-point calculation methods invented by the marquis are simple and easy to use. Even if a illiterate villager has a little wisdom, he can serve as a store account for a few days. When these four-point calculation methods are implemented in the world, the Tang Dynasty will no longer lack people who can make clear calculations. Your Majesty no longer needs to be enlightened and calculate the subject. Isn't this a huge contribution?"

It can be seen that Li Shimin was still full of trust in Li Chunfeng. Seeing that he was so confident, he couldn't help but believe it. But the name of a great master cannot be taught lightly. Even if Li Chunfeng thinks that his skills are not as good as others, it is useless, and it must be believed by the government and the people.

Li Shimin thought for a while and said, "This matter needs to be discussed calmly. You are an expert in calculation. First calculate whether Professor Li Mu's method is correct, and then see how these four algorithms are implemented, and then observe the results."

Li Chunfeng wanted to say again, Li Mu was really hungry. He didn't care at all, but he cared about his lunch at this time. He interrupted, "Thank you for your kindness. I don't want to be a great master. Whether it's the symbol or algorithm, my initial idea was to facilitate the use of illiterate craftsmen in the Ministry of Works. Forget it. Just forget about your reputation. You and the King of Yue are calculating here, and I still have something to report to Your Majesty."

As he said that, Li Mu approached Li Shimin and said, "Your Majesty, I have invented a new thing, which is a powerful tool for benefiting the country and the people. Just as I was about to write a memorial, I happened to report it, and your descendant was so that I might as well observe it with my own eyes, so I would not understand it in the memorial."

"A magical weapon that benefits the country and the people?" Li Shimin was a little unbelievable, but thinking of Li Mu's magicality, he thought he had invented something like the "Zhenguan Plough", so he also became interested and said, "Where are you? Take me to see it."

“In the kitchen…”

"Um?"

"No, no, I am so hungry that I said the wrong thing for a moment, in Chen's studio, in the studio."

Seeing Li Mu appearing pitiful, Li Shimin snorted and said, "It seems like I'm so harsh about you... Forget it, I'll go to your studio first, go eat something before coming over. Remember, hurry up!"

Li Mu quickly thanked him, raised his legs and ran away. He was really hungry, and he secretly swears in his heart that every morning from now on, he will definitely get up and have breakfast after listening to Qiaoqiao's words, and no longer sleep in and mess around with Li Zhien, the little fairy.

Li Shimin shook his head and sighed, then looked at Li Chunfeng and Li Tai who were already squatting on the ground to concentrate on calculations, and walked towards Li Mu's studio. He had been here many times in Zhulu Hou Mansion, so he could naturally find it. Who doesn't recognize who Li Shimin is? Although Li Mu's studio is idle and idle, is Li Shimin a idle and waiting? There is still a place in the world where he can't enter?
Chapter completed!