After Xu Yue finished speaking, he was ready to run. It's not that he can't calculate it. He has the idea and the method is correct. But these days, you have to calculate the precise pi by yourself, especially when it is used to calculate the radius of the earth. How accurate is it?
The degree must at least reach an integer, and conversely, the pi must be calculated to at least seven or eight digits. It slips, it slips, triangles are easy to calculate, but pi is terrible.
Li You grabbed Xu Yue and said something. At this time, Li You really thought Xu Yue was quite useful. After reading the questions, nothing could be left in his mind. Xu Yue just said thoughtfully.
Knowing how to calculate, Li You was satisfied with it.
"How is this calculated?" Li You grabbed Xu Yue and asked, he was really curious about this.
"What's the point of this? Just rely on the change in degree to solve the triangle, but what is actually calculated is the circumference. After the calculation, the radius is calculated based on pi. The only trouble is that pi is difficult to calculate. At least this must be calculated.
Seven or eight digits, I don’t want to cut a circle, I can calculate it by force, it’s too uncomfortable, this pure number has no meaning, I like the mathematical rules in it.” Xu Yue said very dissatisfied, he has no interest in calculation.
, Zhao Shuang likes this kind of thing, what he likes is mathematical logic.
Although they are both mathematicians, Xu Yue actually pursues mathematical logic and studies the laws of mathematics, so his spiritual talent allows him to forcibly write a usable operating system, because what is needed for things like machine code is logic.
and rules, and Zhao Shuang uses pure numbers, so if Zhao Shuang calculates pi now, Zhao Shuang can just calculate the tens of thousands of digits without any problem.
But if Xu Yue is asked to calculate this, to be honest, Xu Yue can only calculate it slowly using the secant method. Unless he takes the time to make a program specifically for this calculation, Xu Yue will feel uncomfortable if he is asked to calculate it by himself.
To put it too much, after calculating pi to the sixth or seventh digit, the normal calculation method is a bit too terrible. Although Xu Yue can also calculate it, as someone who knows the radius of the earth, he knows very well how to calculate it in writing
The process is just to take a more accurate value of pi to ensure the accuracy of the integer part of the earth's radius value. The circle cutting method only needs to cut the edges to 24576 polygons...
After all, Chen Xi's question has already made it very clear. If you only know that the interior angles intersecting parallel lines are equal, then you have to calculate everything else by yourself, which is very life-threatening.
Xu Yue quickly explained to Li You on a piece of paper how to calculate the radius of the earth based on such a piece of information. Li You was extremely silent. As a spiritual gift holder and one of the best, how much awareness does Li You have?
When it comes to mathematics, if you don’t know it, you just don’t know it.
"Actually, the difficulty of this question is not to calculate the circumference, but the radius." Xu Yue said with some regret, "The first half of the circumference is considered a scoring question."
Xu Yue said this, and Jiang Wan on the side put his hand on his forehead. Is this considered a score question? Ah, this can be considered a score question.
"Absolutely, it is indeed a scoring question." Chen Xi nodded, "The difficulty of this question is actually to find the radius, because the earth is very big, and when you calculate, the minimum requirement is to be accurate to single digits, and the existing
With this huge circumference value, the three-dimensional diameter can only be accurate to the thousands."
Fazheng on the side twitched when he heard this. Can this be considered a question? If I remember correctly, my grandfather and I learned mathematics very well when I was a child. The problem is that I have never seen such a perverted question since I was a child.
What a joke, is this considered a free point question?
"It's a sub-question. There are at least more than 300 people in the Central Plains who can solve this question after being informed of the pi ratio." Xu Yue thought for a while and said, "Anyway, most of the families who engage in astronomical phenomena can do it.
This, the method used by the Gan and Shi family when they first calculated the circumference of the earth was actually similar to this. At most, they didn't react for a while after reading the question, but they will know it after thinking about it."
"The real difficulty is actually to directly calculate pi without prefix, and calculate the radius accurate to single digits. How many times does this need to be calculated at least?" Chen Xi looked at Xu Yue and asked, he did not give pi in this question, and even if he knew it
Pi, the existing normal pi is not enough to calculate a single-digit radius, at least six or seven decimal places.
"It takes one calculation to cut a side. If you don't make mistakes in the whole process, it will take about 90,000 times to calculate the length of the triangle's sides and the same number of times to calculate the perimeter. I estimate that if I do this problem, I'm afraid I won't be able to do it within the given time.
I can't even calculate it." Xu Yue thought about it and said, the exam time is too short, and there are more than 90,000 trigonometric function calculations plus perimeter calculations. I'm afraid his calculation ability is really not good.
There is no way. The further you calculate, the more decimal points you have, and you cannot take fuzzy values. The actual calculation data may be in the millions. Xu Yue does not want to participate in this kind of cheating game.
"I estimate that Zhao Shuang is the only one in the entire Central Plains who can answer this question to Chen Hou's satisfaction within the exam time, and he also has to use his mental talent." Xu Yue said angrily.
Do you think the difficulty is to calculate the triangle and its perimeter?
That's just an introduction. The real difficulty is that after you know the extremely large circumference, you can back-calculate the pi without pi!
"Indeed, it would be enough if we don't count it to kilometers. In this case, the difficulty will not be very high if we have four decimal places." Chen Xi thought for a while and said.
Xu Yue sneered when he heard this and took a gamble. Even those who can calculate will give up directly when they see this question. Only guys like Zhao Shuang can do this kind of question. This is really a pure competition for computing power. His uncle's
, if you want to be accurate to millimeter, it will take at least a dozen digits.
According to the unoptimized hard calculation method of the secant method, every additional digit will directly increase the index. With more than a dozen digits, Xu Yue suspected that what Chen Xi was looking for was not a math guy, but a computer.
"In short, the difficulty of this question does not lie in what you think is difficult, but in how to get the value." Xu Yue said angrily, "If you really want to make it difficult, the difficulty will be so high that it will explode."
Human supercomputers have calculated pi for more than a hundred days and can still continue to calculate. The question is just to screen the geniuses among ordinary people. Those who really realize the problem are the ones Chen Xi wants.
"Did you run out of numbers?" Xu Yue made treacherous remarks to Chen Xi, not taking Chen Hou's majesty seriously at all.
"You know, why don't you hurry up and make it?" Chen Xi didn't care about Xu Yue's tone at all, because he really lacked super calculation, even the kind that was not very strong, it would be fine, and it would not be a loss for other calculations.
Xu Yue had nothing to say and just ran away. He couldn't stay in such a cowardly place anymore.
Fazheng, Jiang Wan and others fell into isolation when they saw the exchange between Chen Xi and Xu Yue. They estimated that they would never make such outrageous remarks about themselves being good at mathematics again. Good at mathematics? Haha.
Haha, there is such a concept as being good at mathematics in the human world, but it does not exist. In fact, the more you know about mathematics, the smaller you will feel!
"Then let's take this question as the last big question in arithmetic. How many digits is accurate?" Li You turned to look at Chen Xi and asked after Xu Yue ran away.
"It's just a joke. How could I be so bad? Of course, it only needs to be accurate to three decimal places, just how many kilometers." Chen Xi said with a smile. He is not an animal, how could he be as perverted as Xu Yue thought?
.
Li You glanced at Chen Xi and was too lazy to discuss the matter with Chen Xi.
"Do you have anything else? If not, I'll run away first." After Chen Xi answered Li You's question, he looked at the sky, considered the problems Zhou Yu was currently facing, and decided to go home and sleep.
Can you help Zhou Yu? After all, he tried his best before, but the situation was not very good. It seems that Zhou Yu really cannot escape from Shenxiang.
"I want to run too." Fazheng said immediately.
Zhuge Liang glanced at the two of them, raised his hand to indicate that they should stop saying anything and leave quickly. Fazheng hurriedly said a few words of thanks, and then ran away decisively. Unlike Chen Xi, Fazheng still wanted to do more.
Face, Chen Xi could run away at any time. It doesn't matter whether Zhuge Liang agrees or not. Do you think it's a question? No, it's a notification.
"Slip away!" Chen Xi saw that Fazheng was also planning to leave early, so he waited for Fazheng twice, and the two left together, leaving Guo Jia alone on the other side. However, Chen Xi and Fazheng had no bottom line.
He didn't see Guo Jia and just slipped away.
"Fengxiao, why don't you go and listen to the music too." Li You greeted Guo Jia who was gritting his teeth. Guo Jia packed up his things and ran away without saying a word. The Political Yuan quickly became cold, leaving behind
Those who come down are all capable ministers in the true sense.
"You two bastards didn't even call me!" Guo Jia chased out and cursed at Chen Xi and Fazheng.
"We both have something to do when we go back. What are you going to do?" Chen Xi said angrily.
"I'll go back and teach my stupid son!" Guo Jia said with a bit of ridicule. Of course, this was not a lie. Guo Jia's son Guo Yi was indeed not very smart, and he did not inherit Guo Jia's unfettered wisdom.
But Guo Jia didn't feel any discomfort about this.
"Teaching? I think it would be better if you sent Boyi to General Zhang to practice martial arts. I feel that his body bones are a bit weak due to your inheritance." Fazheng frowned and suggested.
Earlier, Fazheng didn't feel that Guo Yi was weak. After all, Fazheng was good at it himself. There was no comparison, so there was no harm.
But not long ago, Guo Yi was standing with a group of guys who were smaller than him, such as Liu Chan, Sun Shao, and Deng Ai. Fazheng discovered that Guo Yi seemed to be really weak. How could those guys be so strong!
How can I not be strong? These people are well fed and some people are urging them to train. It would be strange if they are not strong.
"I want to practice hard. During the time when Yunchang came back to recuperate, I took my son to see him. Alas, Yunchang's youngest son and grandson have both started practicing martial arts." Guo Jia said with a sigh filled with emotion.
He said in a tone of voice, "Time flies really fast."
"Tanzhi is really a good person." Fazheng added after hearing this.
One thing to say is that Fazheng and Guan Ping are not very familiar with each other. Fa Zheng's military commander circle mainly consists of Guan Yu and Zhang Fei. What should I say to Guan Ping? Guan Yu asked Guan Ping to call Fazheng uncle. Fazheng felt that this was not allowed, but each of them
It doesn't seem possible to talk about each other, because we are really close to each other.
Therefore, Fazheng was embarrassed to meet Guan Ping. Guan Ping also noticed this, and to be honest, the age difference between the two parties was actually not much different, so they usually met less often to avoid embarrassment. But what could Guan Ping do?
When picking up things, he would also remember to give Fa Zheng some time. For example, this time, Guan Ping also gave Fa Zheng a fruit to his son who was just born and was not yet a hundred days old.
Guo Xima is the thing that Chen Xi's son Chen Yu broke out from Zhang Bao's hand. At that time, Chen Xi thought it was a foal, but in fact it was not a foal, but a serious adult Guo Xima. This thing was born with an innate body shape
It is small, usually less than 70 centimeters tall, so it is indeed very suitable as a mount for children of Zhang Bao and Chen Yu's age.
When Guan Ping came back last time, he saw Chen Yu and Zhang Bao snatching these things. When he came back this time, he brought a lot of them from the southwest, basically giving one to each child of this age group.
After all, everyone looks up but never looks down, so it’s nothing to give a small gift as a junior. As for how these horses came, in Guan Ping’s words, they were caught from the wild.
Although it sounds outrageous, there are really many wild animals these days. Even in the theoretical Han Dynasty, there are actually many places that are completely undeveloped.
"Indeed, Yu'er likes it very much, and Chen'er also likes it very much. The two of them rode horses together to chase the goose..." Chen Xi raised his head and thought for a moment before saying.
This is what Chen Xi saw with his own eyes last time. His eldest son taught his youngest son to ride on a horse and use a rope to trap a goose in the Bahe River. After roping the goose, he rode the horse and dragged the goose away. Although the horse was big
He was too young and could not run fast, but after riding on the horse, Cai Chen, who suddenly gained three laps of courage, really lassoed a big goose under the leadership of his eldest brother and his eldest brother, Chen Tai.
When Chen Xi saw Cai Chen at that time, he saw that the other party was holding on to the noose, blushing and refusing to let go. He was very excited and lively, and his speech was no longer as gentle and soft as Cai Yan taught him.
It was a fierce roar, and it was obvious that he was very excited.
Of course, to Chen Xi, this child probably has the spirit of a boy. If Cai Yan continues to raise her like this, she will become a daughter.
"I feel like boys should be more wild when they are young. After having this horse, Chen'er has become a lot more naughty. It is completely different from the well-behaved person before. It's good." Chen Xi said with a smile.
"Come to think of it, did you really let this child's surname be Cai?" Fazheng frowned and said, these days we are still very particular about this. It would be fine if Chen Xi didn't mention Cai Chen. After mentioning Cai Chen, Fazheng would inevitably have to ask a few questions.
"Don't you know that the old Chen family has a tradition?" Chen Xi was silent for a while, feeling that there was no way to argue with Fazheng on this matter using normal logic. After all, even Liu Bei, a guy who strongly supports him, is here.
Chen Xi couldn't understand this matter, so Chen Xi felt that he needed to describe this matter with some facts that seemed illogical, but happened all the time and were recognized by people.
"What tradition?" Guo Jia squinted at Chen Xi, as if to say, I am a native of Yingchuan and I am here. Come on, make it up. I want to see what you can make up.
"How do you say this?" Chen Xi strode forward with his hands behind his back. After walking a few steps, he looked back at Guo Jia and Fazheng who were standing there, "Chen's family has a characteristic, that is, Chen's direct veins can be stable.
The birth of an elite of the same generation, but no matter how outstanding this elite is, when the branch rises, the light of this elite will be overshadowed by the genius of the branch."
Guo Jia was silent for a while after hearing this. As a native of Yingchuan, he knew this joke, especially after working with Chen Xi for many years. Guo Jia had a clear understanding of this thing. This thing that sounds outrageous, if you really want to say it
, which is actually realistic.
Sima Ranju, Sun Wu, Sun Bin, Kuang Zhang, not to mention civil servants, each of these people were scornful of the elites of the Chen family in their contemporaries.
"So letting Cai Chen out may not be a bad thing, right?" Chen Xi said with a smile, "Maybe it's not a good thing for the Chen family, but it's definitely not a bad thing for me. Besides, it can also please Zhao Ji.
Make it easier for me, right?"
"Thank you for your good attitude." Fazheng curled his lips and said. The surname passed down from the ancestors and the number assigned to the Y chromosome are the essence of the surname. Without changing the surname at will, the same surname represents the same thing.
Although Fazheng does not have this awareness of the Y chromosome, Fazheng will not accept changing his cub's surname at all.
"I don't pay much attention to this kind of thing." Chen Xi waved his hand and said, "I really have something to do and need to leave first. You can contact me later if you have something to do."
"What's going on recently?" Fazheng raised an eyebrow and said, "Come to my house for a drink tonight if you have nothing to do. Forget about the invitation. It's rare that most people are here in Chang'an recently."
"What's going on in Jiangdong? Pang Shiyuan has judged that Meng Kangbu is about to arrive. I have to release Gong Jin quickly. To be honest, even if Xingba is driving a seventh-generation ship, I'm still a little worried." Chen Xi sighed and said, "Meng Kangbu is about to arrive."
Kangbu's strength is quite good. If the seventh-generation ship fights head-on, I'm not worried that Xingba will lose to Mengkangbu. The problem is that if Mengkangbu sees the appearance of the seventh-generation ship, it will be really hard to fight head-on.
There’s just something wrong with my brain.”
"Speaking of which, has the submarine problem been solved?" Guo Jiayi asked with raised eyebrows.
If Mengkangbu were to sneak all the way, it would be difficult for the Han Dynasty to deal with both observation and attack. After all, the new water flow buffering secret technique developed by Kushan was really disgusting. The sea water itself would absorb the impact, and further
After enhancing this effect, Moncomb's fleet was hiding under the sea at a depth of three to four hundred meters. Unless the seventh-generation ship's gun can directly hit it, it is difficult to cause damage.
"There is no need to solve it. The Strait of Malacca becomes shallower towards the southeast, and the general water depth is 25 meters." Chen Xi shook his head and said, "Degui's navy is there."
I get up early to work. I feel like I'm really useless. If you have votes, please vote. There's something really wrong with the author's level of struggle. Sigh.
