Northern Song Dynasty: Starting from the son of Song Renzong

Chapter 112 Terrible!

Chapter 112 Terrible!
Zhao Xin's reputation in Kaifeng City has been known for a long time.

Therefore... when everyone saw that it was a child who came out, they were not very surprised.

But I still can't help but take a quick look at it out of curiosity.

Zhao Xin sat down calmly.

He told everyone, "Everyone sit down."

You are standing like this, letting me look up at you. Do you think you are being polite?

Everyone found a seat nearby and sat down.

Zhao Xin said directly: "From now on... I will give each of you five strings of cash per month, and you will be responsible for helping me solve some difficult mathematical or engineering problems. Of course, I know that some of you also have other positions, but that doesn't matter. I can only say that ordinary tasks may not be very heavy. What do you think?"

Five strings of cash a month was a very low salary.

But when I heard that I could work part-time...

That's different!

Anyway...it's a waste if you don't make this money!
As soon as Zhao Xin came up, he decided on the salary.

If you are dissatisfied with the treatment, you can quit.

Zhao Xin looked at them, and they all looked at Zhao Xin. It seemed that an old man wanted to quit, but was pulled down by two young men.

Zhao Xin glanced at them and continued, "I plan to create a mathematics group. Hmm... I'll study mathematics when I have nothing to do, and edit some books. If there's anything else, I'll make other arrangements."

"For example... I plan to develop in Xuchang in the future. How long is the journey? How much food will be needed? How many thatched houses will be arranged for the refugees? All kinds of expenses, I need you to calculate a basic budget for me."

in fact……

For a simple matter like this, Zhao Xin himself, or Zhao Xin just finds someone to do it.

Especially those minor officials at the grassroots level who are in charge of transporting grain and fodder.

But since we are already planning to support such a group of think tanks, even though this matter is small, it would be a waste if we don't use them.

After Zhao Xin finished speaking, he said, "If no one wants to quit, then there are seven of us here, so it's you seven! First, help me solve a difficult math problem. That is, if I want to open a sports betting house, how can you set the odds so that I have a 100% chance of winning and absolutely no chance of losing."

"For example, there is a Cuju team over here, and another Cuju team over here. Experienced viewers think that the first team has a 70% chance of winning over the second team. So, how should the odds be set?"

Where has anyone ever encountered such a difficult mathematical problem?
The issue is……

Whether you read "Nine Chapters on the Mathematical Art", "Zhoubi Suanjing", or any other arithmetic books, you will not find any books teaching this!

General arithmetic books teach very simple things, and even contain content that is closely related to daily life.

For example, measuring the acres of land.

Also, there are those who measure the height and depth of valleys.

The most useful one is probably the Wu Cao Suanjing, however, it only teaches you about issues such as military deployment, supply transportation, trade exchange, grain taxation and warehouse volume.

When everyone heard what His Royal Highness Prince Yu said, they were all stunned for a moment.

Moreover!
It's not a good idea for you to run a gambling house, right?
Zhao Xin also said: "This may be a little difficult for you, but it doesn't matter, there is still plenty of time. You can think about it slowly after you go back. From now on, we will meet twice a month, once in the middle of the month and once at the end of the month. The middle of the month will be fixed on the 15th. Um... Next, it's time for class!"

Everyone was even more confused.

Attend class?

What class?

I saw...

Zhao Xin has already asked someone to prepare screens and paper.

Next, you can write directly on the paper hanging on the screen.

Zhao Xin also said: "Let's start with numbers. Words are not a bad idea, but they are not very convenient to read."

Zhao Xin then wrote down the basic numbers and symbols one after another.

"This is a new way to write numbers from zero to nine, and then here are addition, subtraction, multiplication, division, square, square root, and two unknown numbers."

"Let's take an example from the Nine Chapters on the Mathematical Art."

"Although I wanted to use more complicated examples, I'd rather use the chicken and rabbit in the same cage because it's intuitive and easy to understand!"

Soon, Zhao Xin came up with a set of equations.

Then, using the method of solving equations used in later generations, the answer was finally calculated.

"A column calculation like this is enough to solve many problems in the book." "It can be regarded as a way to broaden your horizons."

"In addition, you'd better get used to using this method to show your calculation process and results in the future."

"Also... next, I will tell you about a problem related to probability."

"For example, the government has three pairs of black socks and one pair of white socks. Assuming that the socks are not distinguished between left and right, then the probability of randomly picking two socks to make a pair is... that is, they must be the same color..."

soon……

Zhao Xin then figured it out again.

“It’s a matter of calculating probabilities.”

"Well... it's just a small introduction to it, to broaden my horizons. I may not need it in my daily life. I'm sure such topics are rarely seen in ancient books. But... it may be useful in the future."

From here on, some people's minds started to feel a little dizzy.

Zhao Xin then decided to go all out and get the coordinate system for them.

as well as……

How to use the coordinate system to express a circle in the form of an equation.

Turn a graph into an equation.

When it came to this, Chu Yan started to lose his composure!
After all, things like socks are easy to understand as long as you think about it and simulate it.

But this turns from a circle into an equation.

What the hell!

This works too! ?

This is impossible!

Zhao Xin even teased him, saying, "Using this method, we can actually calculate the value of pi, but time is limited, so let's talk about it later when we have a chance."

If Zhao Xin was not His Royal Highness Prince Yu, Chu Yan would probably have grabbed his sleeve and stopped him from leaving.

terrible!

Is this a calculation method that an ordinary person can think of?

It was like a force suddenly pulled Chu Yan into another world.

Yes!

Chu Yan was extremely sure!

The world has matured tremendously.

Looking at those numbers, symbols, and calculation methods, Chu Yan even felt that this thing of His Royal Highness Prince Yu did not belong to the human world at all.

At least……

Thousands of years ago, he had never heard of such a method of calculation.

Participate in politics at the age of five!

Is this the ability to participate in politics at the age of five?

On the way back...

Chu Yan had a lot of thoughts and mixed feelings.

His two disciples also looked dazed.

of course!

They soon regained their composure, and that night, they worked on their homework by candlelight.

Good guy!
Following Zhao Xin's method, even a mentally retarded person would be able to solve the equation problems in the books.

This set of standardized solutions is countless times more universal than various back-method solutions.

Then Jia Xian, one of the two men, asked, "Does Your Highness Prince Yu have any mathematics teacher?"