future library.

Chapter 24 Calculus

Liu Bin was a good drinker, seeing that it was his new son-in-law who refuted Wu Zong, he couldn't help being very interested, shaking the wine cup in his right hand and saying, "Jinzhou, tell me what is the crisis wind?"

"It's calculus, advanced geometry." Cheng Jinzhou raised his sleepy eyes, looked at the pairs of eyes "thirsty for knowledge" around him, and said: "It's as simple as land surveying, there is no piece of land, it is really neat and tidy Yes, how to deal with the unevenness is what calculus has to do.”

Wu Zong also drank too much wine, shook his hands and said: "The uneven places need to use the techniques of cutting and mending, among which the mystery of cutting and mending can't be exhausted even after ten years. "

"Can it not be mysterious? You are using the finite to calculate the infinite." Cheng Jinzhou seemed to have returned to the university in a trance. He seemed to be teaching undergraduates on behalf of an unscrupulous doctoral supervisor, with a silly smile on his face that lured female students: " Really irregular graphics, no matter how you cut them, must be estimated after all. As long as the estimation is wrong, how can you dare to guarantee it? Realistic mathematics can only be precise, not accurate."

Wu Zong was shocked, and the wine was half sober, and he said in disbelief, "Can you directly calculate the irregular figure without cutting it?"

Liu Bin asked vaguely, "What does Mr. Wu mean?"

Wu Zong didn't answer, but just looked at Cheng Jinzhou fixedly.Mathematics is a very realistic thing, and there is no room for illusion. Since the latter can understand such cutting-edge issues as heptagons, they are naturally not aimless.

What's more, he was recognized by Liu Kuang, a fourth-level star warlock.

With Cheng's physical fitness, a few glasses of wine can make him drunk, but he vomited for a while and became a little more sober, which only made Cheng Jinzhou hang his tongue and talk nonsense: "Measurement of irregular shapes is a matter of fractal geometry." , It has nothing to do with me, but if you want to measure the land or something, I can still use calculus casually."

As he spoke, he dipped his hand in wine and began to draw twisted pictures on the tablecloth.

The astrologers enshrined by the Cheng family were more or less interested, and squeezed together with several high-status nobles.

Cheng Jinzhou drew the simplest wave curve at random, which is the first graph in any calculus textbook, and muttered: "As long as a curve is regarded as a collection of many points, that graph is not Can it be measured accurately? How fine your points are, how high the accuracy can be, until you are exhausted."

No idea appears suddenly. The core concept of calculus is the "limit", which was perfected by Cauchy in the 19th century, and the limit can be traced back to the Greek "poor method" in the 5th century BC.Wu Zong absolutely couldn't understand the formula Cheng Jinzhou used, but he could quickly understand the other party's thinking.

Some of the rice wine had long since volatilized and I didn't know where it went. Wu Zong also stretched out his hand to dip in the wine, ignoring the vegetable soup on his sleeve, and drew two simple irregular shapes, saying: "If you apply your method to Here, we calculate the result..."

"Could it be possible to prove the failure of calculus by trying or enumerating?" Cheng Jinzhou despised Wu Zong with wine eyes, but he still gave the answer.

Nature is unquestionably correct.

"I'm confused, it's my fault." Wu Zong's lips became dry, and he didn't even care about the curling of his beard. After admitting his mistake, he immediately said, "How did you come up with this formula?"

"It's called derivation, and it's not a formula." Cheng Jinzhou wiped his hands with the tablecloth and said, "The process is very cumbersome, so I'm too lazy to write it."

There is indeed a lot of content, but the main reason is that Cheng Jinzhou can't remember all of them.

Wu Zongnuo was embarrassed to speak, but Liu Bin next to him smoothed things over and said, "Mr. Wu, you have to tell us what kind of riddle you are playing."

At this time, it was Wu Zong's turn to be impatient. Just because of the identity of the other count, he suppressed his temper and said: "Whether it is a river beach or a forest, it is never a regular shape. This cutting and repairing technique is to see if there is an extra piece. When it comes down, there is a missing piece. Cutting and patching will always make a difference. No matter how good the star warlock is, it is impossible to cut and patch up the balance. It is enough for normal use, but Cheng... …If Mr. Cheng’s method is correct, it can be used not only for land measurement.”

A group of people were amazed.To talk about the status of calculus in mathematics, it is really hard to say enough, but for these nobles, a little bit of practical and simple meaning is more likely to arouse their appreciation.

Cheng Jinhao looked back with lingering fear. The ladies and ladies had long been suffocated by the smell of deep processing, but they didn't see Cheng Jinzhou's performance at all.

Thinking that Liu Qingshuang only saw Cheng Jinzhou's ugliness, Cheng Jinhao felt a little spiritually happy - even if some tongue-twisters spread the word, the taste was completely different from what he saw on the spot.

The astrologists looked at Cheng Jinzhou at this time, their eyes were eager, like a fat man who was losing weight saw the flesh, his eyes were full of bloodshot eyes, and he almost waved a knife and fork.

Cheng Jinzhou vomited for a long time, coupled with the enthusiasm of waving his wine hand, his mind was clear, and he looked at the standard calculus graph on the tablecloth, and the rest of his alcohol was evaporated by cold sweat. How could he be willing to talk nonsense with them at this time? Regardless of the dishes and basins on the table, he grabbed the tablecloth and tore it up, rolled it up and was about to leave.

Everyone looked at him, and inadvertently moved out of the way automatically—a capable star warlock is always the most popular person on this planet.

Only Liu Bin smiled and stroked his beard, admiring himself in his heart, and when Cheng Jinzhou was about to go out, he waved and shouted: "Master, remember to chat with the old man tomorrow."

The figure turned the corner, and he was still there waving.

The banquet ended naturally, the process was very dramatic, and the result was very beautiful, it can be regarded as a happy event for the host and guests, even a little too much.Liu Bin returned to his residence, still stroking his beard and laughing.

Mrs. Liu, who came back first, was a little unhappy, and while directing the girl to wash and change the master's clothes, she said half-complainingly: "How can you promise marriage like that, and don't discuss it at home? I saw Cheng Jinzhou, and I heard that It used to be a medicine jar, but now it's better, and it's too late to enter school..."

The wives of the Great Xia Dynasty still have a certain status, which is a bit like France in the period of Louis XIV.Mrs. Liu kept her hands on her hands, and kept saying something bad about Cheng Jinzhou.

Liu Bin just smiled. After removing the hot towel from his face, he breathed a sigh of relief, tilted his head and asked, "Shuang'er, what do you think?"

Liu Qingshuang shook her head slightly and said: "Shuang'er just doesn't understand why dad values ​​him."

She counterattacked cleverly.

"This sentence is well answered, and it is worthy of that kid." Liu Bin commented first, and then said with a hearty smile: "That kid is not simple, but his body is indeed a little weaker. Well... let's get Meng Da, Meng Er Give it to him."

Mrs. Liu's hands paused, and she said in surprise: "They saved your life in Tucheng, and you praised them for their bravery..."

"It takes such a warrior to be worthy of a great star warlock." Liu Bin raised his head slightly and said, "I've always been very accurate in my judgment of people."

……

(End of this chapter)