Isn’t this compilation of “Nine Chapters of Arithmetic” too simple?

Li Yuanai quickly finished reading "Nine Chapters of Arithmetic". For him, the knowledge content in it was at best to review the mathematics courses for elementary school students, and only a small part of it was from middle school students.

Suddenly, he thought of a few years ago that Yan Liben told him something regrettable.

Because "The Art of Purification" was too profound and difficult to understand, the doctor of the Sui Dynasty deleted "The Art of Purification" from the math course.

You should know that "The Art of Enlightenment" is a masterpiece of Chinese mathematician Zu Chongzhi.

No one knows the extraordinary things of Zu Chongzhi than Li Yuanai. His pi is a pioneering move in the history of mathematics around the world.

"Let me explain the math of primary and secondary school students in "Nine Chapters of Arithmetic", which is too expensive. If you want to play, play bigger and annotate "The Art of Appendix" to let those doctoral experts who don't know what they know, the greatest mathematicians in ancient China are terrible."

Take action immediately when your heart moves.

Li Yuanai began to search for the book "The Art of Enlightenment" full of bookshelf.

The books Li Yuan left him were extremely comprehensive. In the most inconspicuous corner, Li Yuanai presented five volumes of "The Art of Entanglement".

Although paper in this era has become popular, most books are still in volume and are not really bound into books.

Li Yuanai opened the "Shuo" and looked at it carefully.

Sure enough, compared with "Nine Chapters of Arithmetic", the difficulty of "Embroidery" has been increased by a level.

The core of "Nine Chapters of Arithmetic" is still the first equation, but "Enjoy" has developed to understand the cubic equations of negative coefficients.

This is no longer quite amazing.

Li Yuanai found that with his math level, he had to think carefully about the "Essence" and recall the knowledge he didn't use much in his daily life.

What's more, the ancients?

No wonder "The Art of Enlightenment" was lost in history. This thing is something that ordinary people cannot understand at all.

No wonder people would say later generations that, together with mathematics, the Sui and Tang dynasties seriously dragged down the Chinese mathematics.

Although there were mathematicians like Li Chunfeng and Wang Xiaotong in this era, even they could not understand the core knowledge of "The Art of Enlightenment".

Zu Chongzhi seemed to be too awesome and calculated something that crossed the ages, which made it impossible for future generations to understand and indirectly affect the development of Chinese mathematics?

Li Yuanai was no longer hesitating and began to explain it according to the annotation of "Jiao Shu".

"The Art of Approach" may be so profound that it cannot tolerate this era. However, for Li Yuanai, it is just a little bit of mathematical knowledge in junior high school, which is equivalent to a long-term extracurricular review, which is not enough to worry about.

He pointed out the wrong parts in "The Art of Enlightenment" one by one, and wrote the correct parts in the simplest way.

Especially Pi.

The emergence of pi is a big leap in the history of mathematics and the most important beginning of modern mathematics.

Li Yuanai remembered that when he was studying pi, in order to show off, he recorded pi for 500 more.

The annotation of Zu Chong's Zu Ru is quite detailed.

As for the solution to the cubic equation, it is also easy to use. Through formula and conversion, the cubic equation is reduced to the quadratic equation and then the solution is solved.

After only three days, Li Yuanai explained the "Jiao Shu".

Not only that, he also corrected the mistakes and omissions in "The Art of Purification".

There is no absolute correctness in mathematical formula algorithms, especially in ancient times, which was influenced by the degree of cultural development. It was impossible to achieve absolutely correctness at all. From Li Yuanai's modern perspective, half of it is right, which would be amazing.

After all, even Li Yuanai himself cannot guarantee that these formulas he knows are correct. Perhaps more sophisticated and accurate algorithms will appear in the 22nd or 23rd century?

Looking at the "Adjusting Art" which only has five volumes, I changed it to eighteen volumes.
Chapter completed!