Expansive material

There is a technology today, which is pronounced as jρ n y ǒ ush, a Chinese word, which means an ancient arithmetic name, also known as different multiplication and division methods.

The ancient word arithmetic, today's proportional algorithm, was introduced to India and the west, and it was called the three-rate method. "Nine Chapters of Arithmetic" Su proposed: "There are skills today: all numbers are multiplied to be true. All rates are used as the method. As real as the law. " Wei said: "This is also a skill."

Any mathematical problems, including the decline of scores, even losses, insufficient profits, equations, pythagorean expectations, and some arithmetic miscellaneous problems, even areas and volumes. "If you can divide the complexity of paradoxes, you can understand their differences, judge the differences because of the speed of things, and level their prejudices to make them unbalanced, then all this will be attributed to this technology."

explain

Ancient arithmetic name. Also known as different multiplication and division methods. Equivalent to the modern proportional method.

source

In the Qing dynasty, there was a brief discussion on the four rates. At that time, it was said that Chun had the application of modern techniques, which explained his skills.

Korean "Nine Chapters Arithmetic Millet"

This is a major algorithm about rate. If A∶B=a∶b, then b = ab/a, which was later called exchange multiplication and division by Jia Xian and Yang Hui. India and Europe call it the three-rate method. This is also a skill. Nine numbers as the title of the article can be widely used. The so-called telling the past and knowing it is the same. If we can distinguish the complexity of the number of paradoxes, we can communicate each other's differences, because the success rate of things, the distinction between trial and argument, its fairness and its imbalance will all be attributed to this technology.

In the Three Kingdoms, I paid attention to Nine Chapters of Arithmetic Millet.

Liu Hui pointed out that "having skills in the present" is a universal method. As long as we can find out the problems in the Nine Chapters, we can apply the principle of uniformity to boil it down to skills at present. The beginning of the number is the mother of the number of one, so the guide must be equal to one. According to the millet rate of five, the yield is three, millet is five and one, and rice is three and one.

If you want to turn millet into rice, millet should be the first. One meaning is to conclude five agreements, which makes five one. So, it's three times, which makes one become three. If so, the ratio is one, and five is three. But if you divide first and then multiply or get extra points, the operation is the opposite. We know that five liters of millet has risen to three liters of roasted rice; As far as words are concerned, a bucket of millet is three-fifths of a bucket of wet rice.