Liu Bin was a high-ranking provincial official, and he held an important position in the most important provinces of the Great Xia Dynasty, according to the common understanding, even on the way to the post, he would not have much time, let alone talk with a teenager about the upcoming policies.

Perhaps Cheng Jinzhou's appearance was too prominent, which made Liu Bin somewhat impulsive to go to the doctor in a hurry.

Cheng Jinzhou didn't know much about politics and the like, and relying on the young age behind the possession, he moved his body slightly and said: "It's no problem for me to measure the land by myself, but the calculus I talked about yesterday is very slow to use." ”

In fact, it's not just a matter of slowness, calculus is not an apple that Newton exchanged for a piece of blood, in addition to the application of various formulas, real calculations also need to accumulate a lot of numbers jù - for people in later generations, it is to check the table, and Cheng Jinzhou does not have such a thing in his hands.

If you want to do all the calculations of calculus over the years, it is basically impossible to do without the help of a large computer and other information. In other words, science in the 21st century has reached the point where lone heroes are useless.

Liu Bin was obviously a little disappointed, nodded lightly and said: "Mr. Liu Kuang, build the land of the whole province and set the coordinates from the air, but this will require hundreds of star warlocks, and the time will be as long as two to three years, although it has been ...... very quickly."

"But too expensive?" Cheng Jinzhou shrugged slightly. 6-seater helicopter, an hour's rental cost is rarely more than 1ooo dollars, converted into silver with grain, but only 3o taels, can fly in the sky, where is anyone willing to take this money - even so, modern measurement of land, no one will use hundreds of helicopters - this is the difference in production efficiency.

"yes." Liu Bin sighed, and then smiled: "Forget it, let's chat casually, Yang Ming, you also go and get ready." ”

"I have a way to get you to spend less, but it's impossible to say that it doesn't cost money." Cheng Jinzhou quickly used his brain, hesitated for a moment, and finally said it. This transporter is the real master. The status is noble, does not understand mathematics, and has a close relationship with himself, and is the first barrel of gold mine production area of excellent nature.

Yang Ming said "oh", sat back regardless of his identity, and looked like he was listening to Liu Bin.

From the town guard envoy to the Hexi transfer envoy, Liu Bin was promoted by leapfrogging in terms of authority, and he was not very old, so he naturally had great ambitions. Measuring land, opening up tax sources, and even reforming the aristocracy were all part of the ambition, but in the early stages, the plan was stuck in a bottleneck, and it was too much to worry about.

Like the birth of a mathematician, in the history of astral warlocks, there are many people who became famous at a young age, and the two will not look down on Cheng Jinzhou.

Looking at their appearance, Cheng Jinzhou couldn't help rubbing his head, and said helplessly: "Do you understand?" ”

"Go and ask Mr. Wu to come over." Liu Bin reacted quickly and immediately shouted out. One of the purposes of his coming to Cheng's house was to borrow a few star warlocks he worshipped, and the black vertical was also in line with his eyes.

Cheng Jinzhou took the opportunity to sort out his thoughts, the ring can't be counted on now, but he has to rely on the little poor knowledge he has accumulated, in exchange for money to support it, it's a little sad to think about it.

Wu Zong trotted into the living room with a pious face, bent down in a regular manner, shrunk his shoulders, bowed deeply with straight arms, and performed a disciple ceremony. The Astral Warlock has their own rules of life, intellect and intellectual worship, which are the most important of them.

Cheng Jinzhou was ignorant, but he looked at Liu Bin and Yang Ming stunned.

After finishing the salute, Wu Zong sat quietly under Cheng Jinzhou's hands, his hands on his legs, like a primary school student.

Cheng Jinzhou's spirit was not put on him, and when he saw that the person had arrived, he blinked and said: "With the current environment, if you want to measure the land of a province quickly, Liu Kuangxing's method should still be the fastest." ”

Liu Bin nodded in agreement, if you don't use a star warlock, it is possible to measure a large area of land for ten years.

"I'll just talk about two ways to reduce costs." Cheng Jinzhou said, subconsciously making a gesture of holding a pen, Wu Zong was like a predatory sparrow, and immediately handed him a stiff brush, then took out the paper from his arms and spread it on the table seriously, with a look of anticipation.

For the non-grade astral warlocks, mathematics that represents the cutting edge of the times is what they are most looking forward to.

Cheng Jinzhou rubbed his nose and said while writing: "The most difficult to measure the land, mainly the slopes and terraces of the hills, in this regard, I have an algorithm, that is, to accurately measure the area, but also to speed up, suppose there is a terrace, when the measurement of two people hand tape measure, respectively from the terrace A point, respectively along the terraces on both sides of the point B, each distance to measure the length of the strings, requiring the strings to remain parallel and equal distance......"

Accompanied by a string of numbers and proper nouns, the tip of Wuzong's nose soon became beads of sweat, and his cheeks and foreheads were full of red excitement.

Even in the 21st century, land surveying does not use a lot of high technology, especially in China, where it is best to be simple and able to measure in townships.

In the Great Xia Dynasty, the problem was different, it was not a society dominated by a small peasant economy, the fields of the big landlords were crisscrossed, and the estates of the big nobles were intertwined, and it took more energy to clarify their land.

As a staff member, Yang Ming also knows a little about mathematics and physics, and just looked at Cheng Jinzhou's diagram and nodded: "Your Excellency Liu Kuang said that when measuring coordinates, this kind of uneven land will be wrong, and in this way, a lot of problems will have to be solved." ”

"Let's talk about the next one." Cheng Jinzhou didn't pause, and said with a stroke of the pen: "I actually have some experience in coordinate measurement...... Can the three be kept secret? ”

"We can submit the results to the association!" Wu Zong was the first to call out, and said with confidence: "Coordinate calculation, but the real top mathematics, as long as you can have a little bit of exhibition, the association may give you a very high reward, maybe you will be awarded a grade because of this, when the time comes, change to some high-level star arrays, who would dare to have any ideas?" ”

"I have my own ideas." Cheng Jinzhou knew very well in his heart, and continued: "Can it be kept secret? ”

Seeing Wu Zong's attitude towards Cheng Jinzhou, Liu Bin looked at him from a level-headed angle, nodded heavily, and said, "Liu swears." ”

"Yang guarantees the lives of his whole family."

Wu Zong had no choice, he couldn't go through Jinju, but after all, he still raised his head and said: "In the name of the star god!" ”

He then said unwillingly: "The association uses a contribution system, and it is always necessary to exchange it in exchange for star arrays and to learn about other people's research results. ”

"That was after that." Cheng Jinzhou had to be careful. Analytic geometry and calculus are the two beginnings of modern mathematics, and modern mathematics is the beginning of modern science, and geniuses cannot solve these two problems alone. He didn't want to show the tail of calculus and throw out analytic geometry at the same time.

"I can measure more area with fewer points without compromising accuracy." Cheng Jinzhou drew simple irregular shapes on the paper and said, "Here are a few formulas that can be applied ......, of course, you should hand it over to Warlock Liu Kuangxing to verify one or two, but don't tell him that I wrote it." ”

Yang Ming couldn't understand the formula, but he shook his chin frequently and said, "If there are fewer points to measure, there will be fewer star warlocks to use." ”

"Exactly." Cheng Jinzhou laughed. In fact, the coordinate method is more used in road construction, because such as highways, etc., they must be flat and unfolded, and there will be no trenches in the fields. However, in the Great Xia Dynasty, patches of land were the mainstream, which was somewhat like an agricultural country in South America.

Compared with the analytic geometry of the 17th century, Cheng Jinzhou can come up with too many things. Even if he is a doctor of physics who is not good at studying.

……

If you like this book, please vote for it, bookmark.

……

Tips: The new domain name "biquge.info" has been launched by Biquge, and the original domain name is about to be discontinued. Please tell each other, thank you!