Song Lao asked: "Then let me ask you, Fang Tian is a hundred steps diagonally, ask about wide geometry, from geometry, how many solutions are there, why are these solutions?"

"This ......"

Mo Jingyuan was stunned for a moment, the problem was beyond his expectations!

Yue Heng heard it very clearly, this is the more common "Fangtian" calculation category in the "Nine Chapters of Arithmetic", which is mostly used in the area calculation formula of the craftsman's skills, wide and from is the length and width, and the square field is a right-angled quadrilateral such as a rectangle. XsHuoTXt

In his opinion, this is a very simple triangle math game, Fang Tian's farthest diagonal, that is, the length of the hypotenuse of the triangle is one hundred steps, ask how long are the two sides of the right angle of the triangle.

According to the Pythagorean theorem, the square of x plus the square of y is equal to the square of the hypotenuse of 100, and to find x and y, this problem should be an infinite solution.

"It's not good, this old man Song is cheating!" Yue Heng thought of this, and his eyelids jumped.

Sure enough, Mo Jingyuan thought about it for a long time, and didn't answer for a long time, looking at his expression, he was doing mental calculations.

Yue Heng quietly asked Cui Kang: "Master Cui, do you know the Pythagorean theorem?"

Cui Kang asked suspiciously: "Could it be the 'Pythagorean' chapter in "Nine Chapters of Arithmetic"? But isn't this book lost? Do you know?"

Yue Heng nodded: "Of course, the Pythagorean theorem mentions that if the Pythagorean is three and the strand is four, then the chord length must be five." The old man asked, if the diagonal is 100 steps long, according to the Pythagorean theorem, 60 steps wide, from 80 steps, or the Pythagorean reversal, these are two different sets of solutions. ”

Cui Kang is also a seventh-level warlock, carrying a measuring ruler with him, and after a little comparison, he quickly verified the conclusion of hooking three strands, four strings and five.

He looked at Yue Heng and asked strangely, "That's true, but what's the use of this?" Not all Fang Tian in the world is Guangsi Congsan. I'm afraid it's just a coincidence. ”

Yue Heng was speechless when he heard this, and could only smile bitterly, this sentence actually came out of the mouth of the seventh-level warlock Cui Kang. He finally had a better understanding of the craftsmanship after the divine punishment.

Facts like hook three strands, four strings and five are in the eyes of the craftsmen of the Zhongyuan world. It's just a fact.

In other words, no one cares why this is the case, most of the craftsmen in this world are pragmatists, and they can use it.

After being reborn, it was not until this time that Yue Heng finally turned a corner, and he had been speculating on the thinking of the ancients with his own thoughts, the Pythagorean theorem. Open squares, algebraic equations, advanced mathematics, every time he hears a math problem, it automatically pops up in his head.

The craftsmen of the Zhongyuan World don't need to, they only need to think about how to design the drawings according to the equipment and magic circles that have existed in the Fuxi Temple, how to build various life and war equipment, how to disassemble and expand the mother array retrieved from the Fuxi Temple, how to adjust the formula slightly when forging and smelting, and how to enhance the lethality of weapons against demon beasts. That's enough.

The basic study of arithmetic is not valued in the Zhongyuan world, and "Nine Chapters of Arithmetic" is written by Liu Hui of the Western Han Dynasty. The fact that no one has summarized, searched, and rearranged such an important work of mathematics into a book for hundreds of years is enough to explain the problem.

"This is not a useful and useless distinction, if you know that the core of the Pythagorean theorem is actually 'in any right triangle, the Pythagorean multiplication of two right-angled sides is multiplied by each other, and their sum is equal to the self-multiplication of the chords'. Then you know how to answer Old Man Song's question!"

Yue Heng no longer persuaded that this kind of basic mathematics should be thoroughly popularized. It is estimated that it is a big project, and it is impossible to affect anything at all just by taking a few theorems. Let's talk about it later!

Cui Kang has a saying: "Core, core...... Any right-angled triangle, multiplied by Pythagorean ...... Its sum is equal to chord self-multiplication...... This is the Pythagorean theorem?"

While reading, he also took out the leftovers in the Qiankun bag, compared a few right-angled triangles of different shapes, and measured the length of the three sides with a scale, verifying Yue Heng's statement many times, and couldn't help but be a little surprised, and then pondered.

This is something he has never thought about, even if he has drawn thousands of drawings and touched countless straight gauge figures, at most he only uses a scale ruler to measure the size, but he has never calculated the general formula of the three sides of the triangle!

At this time, it seemed that the Fuxi stars in the distant sky flickered, and then in the largest artisan association in Chudu, the Shenmu card enshrined in the altar also shone a little, and a thin golden silk wrapped around the Shenmu card on the altar, and the golden light never disappeared, constantly circling around the Shenmu card.

The altar is dedicated to Emperor Fuxi, as well as many gods and craftsmen such as Luban and Mozi behind him, which is a common sacrifice to the gods in the craftsman industry.

At this moment, these gods seemed to resonate with the golden light on the Shenmu card, and they all made a low sound, and the watchman of the Craftsman Association came over after hearing the sound, and was surprised when he saw the abnormality of the Shenmu card!

"What's going on? This Shenmu card hasn't moved for fifteen years, how can its scale change?" The watchman watched as the golden wire stopped, filled in the scale on the front of the Shenmu card, and added a small grid, the mark was clear and fresh, it was not done by man, it must be carved by divine power.

The Shenmu Tablet records the contribution of the craftsmen of the Chu State to the craftsman system, and only by developing a new school of war equipment, or inventing a living instrument that is enough to greatly improve the life of human beings, or by promoting the progress of the entire craftsman system, the Fuxi gods will change the scale of the Shenmu Tablet and increase the corresponding merits.

The watchman trembled his hands, quickly flipped over the Shenmu card, and saw a dense list of merit names, and the last newly added name was written with the word "Yue Heng".

"The gods of Fuxi are above!"

The watchman covered his mouth with one hand, and grabbed the Shenmu card tightly with the other, trembling with excitement.

After a few breaths, the watchman quickly took out the police training plate from his arms, and activated the highest emergency alarm of the artisan union.

A stick of incense time passed, and the high-level officials of the Chu State Craftsman Association who were still in Chudu all rushed to the trade union, and they all saw this scene and were pleasantly surprised!

"Yue Heng, he didn't die! And he also made great contributions to the craftsman's skills!"

"Great, there has been no news of him in the entire Chu State for almost four months, and people are about to go crazy, I didn't expect him to be alive!

"God bless my Chu State! Six people sent an envoy to leave the country, the three warriors' everlasting lights have not been extinguished so far, and the two craftsmen's spirit cards are also unharmed, only Yue Heng is not qualified to enter the roster of the Ministry of Culture of Chu State, and his life and death are unknown! Now I can finally rest assured, all six of them are alive, and they are still alive and well!"

The Craftsman Association is full of joy here, and Yue Heng, who everyone in Chu is concerned about, finally has news!