readx;???“ Yes, Lord Zhu, why is this, please help us and others! ”

Not only Xu Ji, Xu Ermo and Li Ji, but even Zhang Luan, Fu Kuang, Wen Yongyan and Liang Chengxin, who were watching from the side, also looked at Zhu Changyuan suspiciously. Pen "Fun" Pavilion www.biquge.info

It's very simple, this question was first discovered and raised by you Zhu Changyuan, you should know why?

Zhu Changyuan was willing to tell him so simply, and said to Li Ji with a smile, "My lord, please change the direction and measure the diameter of this circle again to see what the result will be." ”

Li Ji didn't want to listen to Zhu Changyuan's command-style request, making him look like Zhu Changyuan's subordinate. However, he himself was a fan of mathematics, and he couldn't help the curiosity in his heart, and with the help of two subordinates, he measured it again.

The result not only stunned him, but also all the people around him, and this time the diameter measured was a little more than thirty feet and four inches.

You must know that after these sons and daughters of the Xu Mansion came to the Xu Mansion today, they are not the second ancestors in the real sense, they are more or less at some level, especially the level of mathematics, which is far beyond their peers of the same era.

"Why is that?" Everyone looked at Zhu Changyuan, hoping that he could say some profound theories and earth-shattering words, but who knew that Zhu Changyuan smiled indifferently, took a sip of tea, and said almost indifferently: "That's because Master Li used too much force when he drew a circle, and he dragged the cotton thread long." ”

"Poof!"

"Poof"

"Poof".

Suddenly hearing Zhu Changyuan say this, Xu Ji and Xu Ermo, who were drinking tea with a teacup, together with Fu Kuang, spit out the tea in their mouths almost at the same time.

This ramming, this nonsense reason, dragged the line long, dragged the line long.

Hey, don't say it, that's really the reason.

Li Ji didn't drink tea or vomit, but Zhu Changyuan took it out as everyone's laughing stock. But my heart is more uncomfortable than those who are choked on tea, and my face is so red that I can't speak.

What to use to fight back against Zhu Changyuan, what people said was originally right.

"Okay, just kidding. Please also ask Lord Lee not to care about a lot. Zhu Changyuan smiled and arched his hand to Li Ji.

Li Ji returned the salute and said: "What Chang Yuan said makes sense, maybe this is the reason why the official can't cut the circumference ratio, the official knows, and he strives to improve it every day." Derive a more accurate circumference ratio. ”

Zhu Changyuan shook his head and said, "This is just one of the reasons, the reason why adults can't cut the circumference ratio is not here at all, listen to me slowly." ”

After taking a sip of tea, he turned his head to everyone and explained: "So, the matrix that Master Li used to cut the circle itself has a problem, and the diameter will be thirty feet and three inches in diameter and thirty feet and four inches in diameter. What is this, not a circle anyway. ”

"It's strange to cut on something that is not a circle, and you can cut out the circumference ratio."

Zhu Changyuan continued to take a sip of tea and said, "Now I'll talk about the second problem of Master Li's method. As he spoke, he pointed to the ground and asked Li Ji, "Dare to ask my lord, is this ground absolutely flat?" ”

What's the plane? Junior high school students know it, but many doctors in the Ming Dynasty don't necessarily know it.

Just because the doctor doesn't know doesn't mean these guys don't know. A part of the Geometric Originals translated by Xu Guangqi contains all the contents of plane geometry.

In other words, as long as these guys can thoroughly understand Xu Guangqi's translation of "Geometric Original". Their knowledge of geometry is no weaker than that of a junior high school student.

Facing Zhu Changyuan's question, Li Ji thought for a while and said, "Chang Yuan is right, this ground is not an absolute plane. ”

"yes." Zhu Changyuan didn't expect Li Ji to be so upright. It seems that I know a lot, "Draw a circle on a plane that is not an absolute plane, and the drawn one is not a circle, and there will naturally be deviations when the amount is measured." ”

After saying this, he said a third question: "Third, Master Li took out an irregular circle. According to the method above Liu Hui's "Detailed Explanation of Nine Chapters of Arithmetic" to cut, even if it is a large circle with a diameter of 30 feet, when it is cut to 768 sides, the length is only a little more than an inch. ”

Without waiting for Li Ji to answer, Zhu Changyuan himself said: "This deviation will expand by seventy, eight or sixty-eight times, and in the end it may be a few inches, naturally it may be a few feet, or even a zhang." And the math master of the Northern and Southern Dynasties, Zu Chongzhi, cut the circumference ratio to seven numbers smaller, do you know how much he cut the edge? ”

The decimal number is an ancient representation of decimals, which means seven decimal places after the decimal point.

Xu Ji's body shook, and he became inexplicably excited, and naturally had many questions about the eternal puzzle of Zu Chongzhi's circumcision, and asked, "I don't know how many sides Zu Chongzhi has cut?" ”

Chang Yuan replied: "Twelve thousand two hundred and eighty-eight sides." ”

After Li Ji heard Zhu Changyuan give such an accurate answer, he was shocked and said, "How do you know? ”

"How do you know?"

"How do you know?"

……

Not only Li Ji, but all the people around the opportunity asked Zhu Changyuan questions at the same time.

Zhu Changyuan's words almost stirred up a thousand waves with one stone, and the circumference ratio was obtained by cutting the circle, which is a puzzle for the ages, although Zu Chongzhi left a seven-decimal place of pi, but how this thing was cut out has been lost for thousands of years.

Now that Zhu Changyuan suddenly said that Zu Chongzhi cut the circle to 12288 sides, he really couldn't help but be excited about these guys around him.

This is an eternal puzzle, how did Zhu Changyuan know.

Even the people around him have the same idea in their hearts: Did this product get the calculation manuscript of Zu Chongzhi back then, or in which ancient tomb excavated the ancient books of the predecessors?

Zhu Changyuan smiled slightly, picked up the teacup and took a sip slowly.

Xu Ermo next to him was so anxious that he said: "Brother, how did you know, don't sell Guanzi, tell me quickly, did you get the ancient book of Zu Chongzhi's calculus back then?" ”

Zhu Changyuan shook his head and said: "It's just a matter of thinking, and after hard thinking and meditation, I finally got the real method of cutting the circle, and when it took a year to cut the polygon all the way to the side of 12,288, there was finally the small seven number that Zu Chongzhi said. ”

"Ah, you, do you know the real circumcision?" Xu Ji excitedly pulled Zhu Changyuan's shoulder, although his father Xu Guangqi had also cut it back then, but unfortunately he didn't get a real method until he died.

No one else knows. He knows it. After every round, Xu Guangqi's every emotion and disappointment is deeply imprinted in his son's heart.

Now, Xu Ji knew that Zhu Changyuan actually knew how to circumcision. The excitement in his heart can be imagined.

If this circumcision technique can be revealed to the world, then the father's spirit in the sky can also be blinded.

"Is the result of the general's circumcision technique the same as that of Zu Chongzhi?"

Xu Ermo is also unusually concerned.

Zhu Changyuan nodded. "Exactly the same! ”

"I implore you to teach you the method of cutting the circle, Xu is grateful?" Xu Ji's eyes actually shed tears. To say that his old father Xu Guangqi has lived his life, whether he is an official or a man, fame and fortune, he has reached the extreme. The only regret is that I didn't get to see the real circumcision with my own eyes.

Although the others were not as exaggerated as Xu Ji, they also looked at Zhu Changyuan one by one, including Liu Yunzhou and Li Ji.

"Alas!" Zhu Changyuan sighed deeply and said, "The technique of cutting the circle is very troublesome. I won't be able to explain it to you in a while, so let's do it, three days later, at the Yamen of the Ministry of Industry, I will start a class to teach the real circumcision, if you are interested, you can all come and listen to it. ”

"Good!" Xu Ji stood up and bowed deeply to Zhu Changyuan, "Thank you, my lord." ”

Zhu Changyuan hurriedly got up and joined Xu Ji. The two bowed opposite each other, saluted at the same time, and said, "Three days later, in the morning, please come to the Ministry of Industry to clean up the department." In the next wish for adult. "Look at the people around you," I would like to answer the great technique of cutting the circle for you. ”

After a pause, he said, "I still have to prepare some necessary items for me." ”

"I wonder what items Chang Yuan needs?" Li Ji stood up and asked.

He is also a member of the Yamen of the Ministry of Industry, and he is Zhu Changyuan's top boss. Subconsciously, he already regarded Zhu Changyuan as his own person, and his own people needed something to ask the Xu family. His boss doesn't have much face.

"Your Excellency." Zhu Changyuan turned around, bowed to Li Ji, and said, "A large blackboard with a length and width of a zhang should be able to write on it, and at the same time, some white stone pens are also needed. ”

"That's all?" Li Ji asked strangely.

"Yes, that's all!" After thinking about it, he said, "If it's convenient for adults, it's better to invite a few gentlemen who operate the abacus." ”

Zhu Changyuan is not willing to calculate every data by himself.

"Good!"

Li Ji happily agreed, these things are all drizzle for him, and there are not many other things in the Ministry of Industry, just this thing, there are a lot of them.

The reason why Zhu Changyuan didn't calculate on the spot was because although the principle of circumcision was simple, the calculation process was very complicated, and he had to go home and use the computer to calculate it first, copy the data and then take it back to the parallel world, so as not to make a fool of himself when explaining.

At noon, I ate at Xu Ji's house.

Xu Ji was happy and entertained Zhu Changyuan and a few people with the highest standard banquet for guests in Xu Mansion.

Zhu Changyuan is not good at drinking, but in this special atmosphere, he actually drank a lot. It is said that the banquet is the most suitable place for human beings, especially men, to communicate, and this is not true at all.

After a banquet, Zhu Changyuan not only resolved all kinds of resentments with Liu Yunzhou, but also turned enemies into friends with his boss Li Ji and shook hands and made peace.

Of course, all of this is based on strength, if you have strength, others will look up to you?

After eating at noon, Xu Ji personally sent Zhu Changyuan home.

Zhu Changyuan was slightly drunk and was sent to the upper room on the second floor in a daze. Lana and Yumin are very worried and come up to serve.

Lana complained and muttered, "I said that I would come back to accompany us to enjoy the moon at night, and if you are drunk like this, what kind of moon will you enjoy." ”

Zhu Changyuan was not as drunk and unconscious as Lana thought, but his head was a little dizzy, and his mind remained quite clear, hearing her words, he simply pretended to be drunk, stretched out his hand and pulled her over and hugged her into his arms, and said, "Who is saying bad things about the master?" ”

Lana wants to break free, where is Zhu Changyuan's strength.

Yu Min was beside him and persuaded him: "Husband, you are drunk, let go of Lana and sleep well." ”

Zhu Changyuan's eyes widened, and he said, "Are you not listening to the master, hurry up." ”

Yu Min was stunned, and before he could react, he saw that Zhu Changyuan had forcibly rolled with Lana, and his face was flushed with shame, and he closed the door and left.

Lana was out of breath for a while, and when she freed her mouth, Yu Min had already walked away, and shouted twice weakly: "Sister Yu Min." He was dragged to the bed by Zhu Changyuan.

"Chang Yuan, you, don't, I'm afraid!" Lana was really scared. (To be continued.) Read the latest chapter of the book, and keep an eye on the wind and rain