Chapter 24    I am really a banished immortal!

In fact, in Chapter Nine Arithmetic, there is a problem of solving quadratic equations of one-variable.

There are even multiple or even multiple questions.

However, at that time, there were only problems that required the use of quadratic equations.

There is no study on parabola.

Li Chunfeng also has profound attainments in mathematics.

When you see the graph of the parabola, you immediately think of the quadratic equation.

Next, the two couldn't help looking at the draft paper.

Then, the two of them were shocked to find that they could not understand at all.

The quadratic equation on Su Haoran's draft paper was written using later generations' xy combined with Arabic numerals.

Of course, Yuan Tiangang and Li Chunfeng couldn't understand it.

If it were Wang Xiaotong, he might be able to understand one or two more times.

And although they couldn't understand, they still felt very powerful.

This five-year-old baby's achievements in mathematics must be no less than them.

This little baby is definitely not a false reputation, but is really capable.

Besides, Su Haoran is very smart.

When I first started to come into contact with the quadratic equations and parabolas, I was still a little uncomfortable.

But soon, he found the idea to understand the problem and quickly solved the problem.

Then, a feeling of joy arose.

Su Haoran stretched and then realized that there were two people standing behind him.

Su Haoran couldn't help but be shocked.

He couldn't help but get up and asked vigilantly: "Who are you? Why are you at my house? How did you come in?"

Yuan Tiangang hurriedly said, "I said Yuan Tiangang, he is my good friend Li Chunfeng."

"Young friend, don't panic. We are not bad guys. We are here to visit you."

These two people turned out to be the famous Yuan Tiangang and Li Chunfeng?

Su Haoran has read the New and Old Tang books specifically, and has studied a period of history in the Zhenguan period in the early Tang Dynasty.

Although this is a parallel world, it seems very inappropriate.

But at least the characters are all these characters.

Yuan Tiangang and Li Chunfeng are all unique figures throughout the Tang Dynasty.

These two people are at least not bad guys.

Thinking of this, Su Haoran couldn't help but feel relieved.

He couldn't help but ask: "The two Taoist priests came to the humble house and immediately made the humble house block and shine. Please sit down, the two Taoist priests."

After the two sat down, they looked at Su Haoran at the same time.

And this look made the two of them scream at the same time.

Next, the two looked at each other and saw a look of horror in each other's eyes.

Yuan Tiangang couldn't help but ask Li Chunfeng: "Chunfeng, I wonder what you saw?"

After hesitating for a while, Li Chunfeng couldn't help but say, "The appearance of this young friend is the only one I have seen in my life."

"It seems that half of it does not belong to this world, but how can people in the world have such a strange appearance?"

"Chunfeng is afraid that he is not good at learning skills, so he took a look. I wonder what friends think about it?"

Yuan Tiangang couldn't help but say in surprise: "What I saw is similar to fellow Taoists."

"I have shown people a lifetime of face, and it is the first time I have seen such a strange face."

"In the future, this person will definitely change the pattern of my Tang Dynasty! Such a person is truly unprecedented and no one will come after him!"

When Su Haoran heard the words of the two, he couldn't help but feel shocked.

Su Haoran has read the records of the two people in history books and always believes that the main achievements of these two people are astronomers and mathematicians.

Talk about fortune-telling and fortune-telling are actually just charlatans.

Because a story is recorded in historical books, it says that one day Yuan Tiangang and Li Chunfeng followed Emperor Taizong of Tang.

I saw two horses on the river bank, one black horse and one red horse.

Li Shimin asked the two to calculate which horse entered the river first.

Yuan Tiangang drew a Li hexagram, which means fire, and fire is red, so he guessed that the red horse crossed the river first.

Li Chunfeng believed that the Li Gua belongs to fire, but the black smoke is above the fire, so he guessed that the black horse crossed the river first.

The final result is that Li Chunfeng has calculated correctly, and it is indeed a dark horse that crosses the river first.

Because of this story, later generations think that Li Chunfeng's ability to calculate is still above Yuan Tiangang.

But Su Haoran believed that these two charlatans were actually covering each other.

There are only two horses in total, one black and one red. These two horses either enter the river first, or the red horse enters the river first.

The situation of two horses entering the river at the same time is almost negligible.

But who can guarantee that fortune-telling is accurate?

So, Yuan Tiangang calculated that the red horse entered the river first, and even if Li Chunfeng was the dark horse entered the river first.

No matter which horse enters the river first, one of them will always be correct.

And the two of them also affirmed each other, but the focus was different. No matter who was right, it could prove that the other person was also very powerful.

If both of them take the hexagram of the Exile, they are all considered that the red horse enters the river first.

The result was that the dark horse entered the river first, and the two of them were embarrassed.

From this story, Su Haoran feels that these two are just two charlatans.

But now, from both of them, he was only half a person in this world, but Su Haoran couldn't help but be surprised.

My dad is a time traveler, not a person in this world.

My mother is a person from this world. In this way, I am only half a person in this world. This conclusion is completely correct.

These two charlatans actually have something to say.

However, this hexagram must not be spread, so as not to cause unnecessary trouble to yourself.

Thinking of this, Su Haoran couldn't help but stand up and recite, "I want to ride the wind, but I'm afraid that the jade building and jade pagoda are so cold that it's so cold that it's like dancing and playing with the clear shadows?"

Hearing these words, Yuan Tiangang and Li Chunfeng couldn't help but say in unison: "I am really a banished immortal!"

Next, Li Chunfeng couldn't help asking, "My friend, is the image you just drawn a graph of a quadratic equation?"

Su Haoran nodded and said, "Yes, a quadratic equation can be expressed in coordinates. According to its shape, I just want it to be a parabola."

Next, Li Chunfeng asked Su Haoran about various questions about the parabola, as well as the symbols that Su Haoran just wrote.

Su Haoran is also very willing to discuss these issues with others.

Therefore, he patiently explained the characteristics of the parabola to Li Chunfeng.

Ancient mathematics mostly started from practicality.

For example, Jiuzhang Arithmetic is mostly associated with practical applications.

Some of the mathematical knowledge in later generations was pure mathematical research.

At least in the Tang Dynasty, it was not useful.

This is probably one of the reasons why mathematics did not flourish in this era.

Su Haoran's various research on parabolas far exceeds the scope of Jiuzhe arithmetic.

These studies made Li Chunfeng and Yuan Tiangang suddenly realize that some of the doubts in mathematics were solved easily.

Arabic numerals, now called Zhenguan numerals, and symbols like xy, also brightened Li Chunfeng and Yuan Tiangang's eyes.
Chapter completed!