future library.

Chapter 294 Ternary Equation
Whether a commodity is widely used or not depends mainly on the usage of ordinary people.

Population is also a commodity. Xia Nu has existed in the lives of the Northern Han people for hundreds of years. They are used to participating in wars and plundering people to work for themselves.Even in the most prosperous period of the Great Xia, even though the Northern Han Dynasty lost one-third of the population and one-fifth of the land, they still stubbornly maintained their own living habits—whether they were civilized or not.

Under such circumstances, An Xiaofeng decided to take away 5 households from nobles and commoners, which immediately caused a huge uproar.Especially as far as the local nobles are concerned, they don't care whether Hanjing is destroyed or whether Anjia is destroyed. Their own people and animals are the foundation of their family.

However, An Xiaofeng, as the great Situ, had expected this situation a long time ago, so under the condition of compensation, he sent 10,000+ troops in a row to sweep up the grassland and farmland north of the Han River. over again.

In addition, the An family also took out 4 households, and the nobles of the aristocratic family divided the remaining [-] households equally. If the civilians were not affected too much, they would not risk their lives to resist the army. The collection of Xia Nu went quite smoothly.

The dark airship only waited for two days at Luoshanguan, which was full of ruins, before seeing the first group of "Xia slaves" with their families.

At the temporary ferry, Cheng Jinzhou saw an unforgettable crowd.

Husbands pulling wives, wives holding children, and hunched old men dragging boxes by themselves, struggling to follow behind the line.Long queues, long and lonely.

Facing the unknown, people who were going back to their homeless country walked silently.Life in the Northern Han Dynasty was not good, but it was a familiar life after all. When I returned to Daxia, I didn't know how to continue my life.

Cheng Jinzhou has seen crowds of tourists and crowds of various events.In terms of the number of people and the degree of congestion, it may be even more than the current situation.The difference is that the former is happy and complaining, while the latter is sad and fearful.

"This is 4280 households. You have counted them all." The Northern Han officials who were in charge of the handover work were also small and small officials, who happened to be diplomatically equal to the officials in De'an.

Today's De'an yamen servants are all as proud as a member of the Ministry of punishment. They hold their heads high and receive them in their hands, and then order the white officers below: "You go and pick people up on the boat, and then ask one-tenth of the households if there is any shortage. population situation."

Some families have many small households, while others have few small households. Cheng Jinzhou doesn't care how many big families he can get, but the basic family unit cannot be destroyed, otherwise, as tenants, their production efficiency will be greatly reduced.

The huge transport ship, like banknotes sweeping through the general public, engulfed every family.It kept swallowing and swallowing, as if there was no limit, as if it had the appetite of the banker and the country.

"Do comfort work." Cheng Jinzhou said to Xu Guinian, but in fact, he didn't know how to appease those ordinary people. In the 21st century, he was just a lucky ordinary person.

Fortunately, Xu Guinian can be regarded as a department-level cadre. He has the experience of managing tens of thousands of households in the entire county, and he promised with an old chest: "Don't worry, magistrate, I will definitely arrange them properly."

"I just have two requirements. The first is to make them willing to farm, and the second is to make their life as comfortable as possible. If you lack money and food, you can ask me for it. There is also a bottom line, from the old man above to the baby below. , if it’s not personal, although I know that there may be deaths, but if there is a death on board, the owner of the ship will be investigated, and the officials above will be investigated, so you have to be careful, understand?" Cheng Jinzhou is not a pedantic person , In the era when human beings can solve the problem of "it's raining, women marry people", the mining industry still clearly lists such cruel figures as the death rate, let alone in such a large-scale transportation process.

In order to minimize the waiting time for the star warlocks, and the transport ship is not a suitable passenger ship, during the 3-day voyage, the conditions on board will not be much better than the smuggling ship of the snake head, the only thing that can be done, but They just put the old, weak and sick on the deck and provide them with enough food and water.

In fact, adequate food and water have been put to the test.De'an is a city that is not prepared for war, and they never thought that one day, they would have to deal with 5 households and at least 20 people eating and drinking. Fortunately, it was only three days.

Xu Guinian agreed to whatever Cheng Jinzhou said.He was already somewhat familiar with the new county magistrate, so he naturally knew how to speak according to his preferences.

Hui Minren looked on coldly, but his opinion of Cheng Jinzhou changed somewhat.

The ships were divided into four teams and took away about 5000 households almost every day. The work was completed in seven days.During this period, Warlock Li Xianfengxing even went to Hanking for a feast, killed about a sheep, and returned to the airship with a whole table of banquets.

Although the star warlocks of the Northern Han Dynasty noticed Li Xianfeng's movements, they were only nervous for a long time, and then watched her leave after eating and drinking.

On the last day, half of the fleet loaded with 5000 tons of iron ore and sailed slowly to De'an Port.The owner and sailors were very happy, it was like the end of a long trip without a hitch.

Song Heng and his team of yamen servants were a little unhappy, because in the past, although De'an only had awning boats for transportation, the county had the right to collect taxes from the boat owners at will, which made him feel quite worthy. right.With the expansion of De'an Wharf, especially with so many people transporting this time, in order to attract ship owners from all over the world, Cheng Jinzhou issued an order to strictly prohibit harassment. He even ordered the county's treasury to pay full shipping fee.

Under such circumstances, Song Heng, who has always been regarded as an ancestor, really made a futile trip.If he dare not accept tribute, what's the point of the bumping on the boat.

On the contrary, Cheng Jinzhou in the sky was overjoyed. He directly let Tang Zheng and Chen Jie, who had just returned from the capital, start a new round of planting through the communication star array. Real rice is planted on 20 mu of dry land and water land, leaving 3000 mu of sloping land to plant pearl rice.Compared with the fertile and fertile land in the capital, the standard of De'an is much lower.

In fact, Cheng Jinzhou originally wanted to buy land cheaply from the landlords in De'an, but after all, it was the cheapest situation, and 20 mu of land would cost him millions of taels of silver, emptying the land of the feudal clan. It is impossible for Ku, and his personal property is not enough.

In view of this, he simply took up all the official land in the five nearby counties, including Nanling, and together with the military farmland of the local Xiang army, he just got enough 5 mu of land.As for the five counties and one county, and how the chiefs of the two armies reported to Xia Jing, Cheng Jinzhou didn't care at all.

In the case of the Northern Han Dynasty, for Emperor Lizong, the warning meant more than the thrill of revenge.

Taking advantage of Cheng Jinzhou's use of the communication star array, Kong Wei, Qin Yu and Hui Minren exchanged eye contact with each other. After he finished the task at hand, Kong Wei, who was relatively neutral, got up and said, "Mr. Cheng, how many are there?" Question, I would like you to explain it to me."

"Oh, you guys want to test me." Cheng Jinzhou jokingly said, he didn't know what the point was,

Kong Wei smiled and wrote an equation on the wall.

"A quadratic equation?" Cheng Jinzhou asked, shrugging in confusion.

"We want to see your problem-solving ideas before proceeding." Kong Wei explained without blushing.

Cheng Jinzhou didn't know why he picked up a pen and solved this difficult problem in the first grade of junior high school in 10 seconds. Most of the time was spent on writing.

The three level four star warlocks looked at each other without comment.

Xiao Cheng didn't know that there was a small trap in the problem that Kong Wei asked just now, and only a teacher who knew how to solve the problem could solve it.The so-called matching method is to make a linear equation in two variables look like the product of two algebras. It was not mysterious in Europe in the 17th century, nor was it mysterious in Xingzhou and Daxia, but the time and method used by each person are different.

What Kong Wei then wrote on the blackboard was a linear equation in three variables.

Although it is only from binary to ternary, the difficulty of its solution is no less than that from a two-star warlock to a three-star warlock, or from an elementary school problem to a high school problem.In fact, in the 17th century, high school students could not solve the three-variable equation. At one time, some scientists declared that the root of the three-variable equation was unsolvable.

Later, the method of proving the solution of the ternary equation involved the proof of geometry, plus negative numbers and complex numbers have not been accepted by the world, it is simply a mess.

Of course, the level of astrologists in Xingzhou and Daxia has surpassed that difficult period, so Cheng Jinzhou easily wrote the solution to the ternary equation without hesitation or awkwardness.

Kong Wei looked at Hui Minren and wrote out a very general ternary equation.

Mathematics is a strange subject in which students focus on specificity.Geometry first considers circles, followed by squares. To be precise, they are the most special shapes in nature. There is a special way in probability called average. More general equations in algebra often mean more complicated and troublesome.

At this time, Cheng Jinzhou would be too stupid if he didn't understand that they were probing.

But he still couldn't figure out what the three fourth-level star warlocks wanted to test.After a slight hesitation, he wrote the answer on it.

Kong Wei glanced at the note in his hand, let go of his voice and said: "Mr. Cheng, for the convenience of recording, I let go of writing the question here, how about you answer it?"

"Answer these?"

"That's right." Kong Wei couldn't help but start writing.

The two astromancers sat up straight in concern.

As early as 10 years ago, Xingzhou had a systematic understanding of three-dimensional equations, but in terms of specific problem-solving speed, it was always too slow, because their solution methods would have various complications and troubles. .

But whether it is a mathematician or an astromancer, they all need a simpler solution to the ternary equation. The demand has spawned many methods. Generally speaking, the better the method, the faster the speed.

It is precisely because of the rapid development of solving equations in recent years that astrologists want to know how much avant-garde knowledge Sheng Ya has mastered. At the same time, it can be regarded as a confirmation of Cheng Jinzhou's identity.

They never imagined that someone would come here with a more advanced solution than Xingzhou.

The quill pen makes a soft brushing sound on the whiteboard.The three star warlocks felt as if they were signing a credit card.

……

Beyond the word count: Tomorrow's chapter is uncertain.

……

(End of this chapter)