Liu Bin drank very well, and when he saw that it was his new son-in-law who refuted Wu Zong, he couldn't help but be very interested, and shook the wine cup in his right hand and said, "Jinzhou, tell me what the critical wind is?" ”

"It's calculus, advanced geometry." Cheng Jinzhou raised his worried eyes, looked at the eyes around him that were "full of thirst for knowledge", and said: "As simple as land surveying, there is no piece of land, it is really neat and tidy, and how to deal with uneven places is what calculus has to do." ”

Wu Zong also drank too much wine, shook his hand and said: "In uneven places, you have to use the technique of cutting and mending, among which the mystery of cutting and mending is inexhaustible even if it is ten years." ”

"Isn't it mysterious? You are infinitely useless. Cheng Jinzhou seemed to have returned to the university in a trance, and he seemed to be teaching undergraduates on behalf of an unscrupulous doctoral supervisor, with a smirk on his face that abducted female students: "The real irregular shape, no matter how you cut it up, must be estimated after all, as long as the estimate is to be poor, how dare you guarantee the ticket?" Realistic mathematics can only be precise, not accurate. ”

Wu Zong was excited, and the wine was half awake, and he said in disbelief: "Can you directly calculate the irregular shape without cutting and repairing?" ”

Liu Bin asked at a loss, "What does Mr. Wu mean?" ”

Wu Zong didn't answer, just looked at Cheng Jinzhou fixedly. Mathematics is a very realistic thing, and it cannot be illusory, and since the latter can understand such a cutting-edge problem as the heptagon, it is naturally not untargeted.

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

With the body of the sick seedling Cheng, a few glasses of wine can be drunk like mud, but he vomited for a while, and he was a little sober, which only made Cheng Jinzhou lame his tongue and let out a lot of nonsense: "Measuring irregular figures, that's a matter of fractal geometry, and it has nothing to do with me, but if you measure the land or something, I can still use calculus casually." ”

As he spoke, he dipped his hand in wine and drew a twist on the tablecloth.

The star warlocks enshrined by the Cheng family were somewhat interested, and several nobles with higher status were crowded together.

Cheng Jinzhou casually drew the simplest waveform curve, that is, the first figure in any calculus textbook, and muttered: "As long as a curve is regarded as a collection of many points, can't that one graph be accurately measured?" As fine as your points are, you can be as precise as you can until you are exhausted. ”

The central 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 "exhaustion" in the 5th century BC. The formula used by Cheng Jinzhou is absolutely incomprehensible, but he can quickly understand the other party's thoughts.

A little rice wine had already been waved and I didn't know where to go, Wu Zong also reached out to dip the wine, ignoring the vegetable soup rubbed on his sleeve, he drew two simple irregular shapes casually, and said: "If you put your method here, we will calculate the result......

"Can calculus still be proved by trying or enumerating?" Cheng Jinzhou looked at Wu Zong with wine eyes, but having said that, he still gave the answer.

Nature is undoubtedly correct.

"My mind is not clear, my fault." Wu Zong's lips became dry, and he couldn't even care about the curl of his beard, and immediately said after admitting his mistake: "How did you come up with this formula?" ”

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

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

Wu Zongnuo was embarrassed to speak, and Liu Bin next to him played a round and said: "Mr. Wu, what kind of dumb riddle are you playing, but you want to tell us about it." ”

At this time, it was Wu Zong's turn to be impatient, just looking at the identity of the other earl, he pressed his temperament and said: "Whether it is a river beach or a woodland, it is not a regular shape, this cutting and mending technique is to see it have an extra piece, cut it down, and fill it in the place where there is a piece missing, this cut and mend, there is always a difference, no matter how good the star warlock, it is impossible to cut the balance, it is enough to say that it is enough to use it in ordinary times, but Cheng ...... Mr. Cheng's method, if correct, can be applied to more than just land measurement. ”

A crowd of people exclaimed. It is really impossible to say enough about the status of calculus in mathematics, but for these nobles, a little bit of real and simple meaning is more likely to be appreciated.

Cheng Jinhao looked behind him with palpitations, the ladies and ladies had long been smoked away by the taste of deep processing, but they didn't see Cheng Jinzhou's wave at all.

Thinking that Liu Qingshuang only saw Cheng Jinzhou's ugliness, Cheng Jinhao was very mentally happy - even if there were people who loved to chew their tongues and spread it around, the taste was completely different from what they saw in the place.

The star warlocks looked at Cheng Jinzhou at this time, their eyes were eager, as if a fat man in weight loss saw meat, his eyes were bloodshot with three maturity, and he almost waved his knife and fork.

Cheng Jinzhou vomited for a long time, coupled with the passion of waving his drinking hand, his brain also sobered up, looking at the standard calculus figure on the tablecloth, and the rest of the wine was also waved out in cold sweat.

Everyone looked at him, and inadvertently gave way of the way - capable star sorcerers are always the most popular people on this planet.

Only Liu Bin smiled and touched his beard, admiring himself in his heart, and when Cheng Jinzhou was about to walk out of the door, he beckoned and shouted: "Uncle, remember to come and chat with the old man tomorrow." ”

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

The banquet ended naturally, the process was very dramatic, and the result was very beautiful, which could be regarded as the joy of the guests and the hosts, and even a little too happy. Liu Bin returned to his residence, still touching his beard and smiling.

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

The ladies of the Great Xia Dynasty still have some status, which is somewhat like France during the time of Louis XIV. Mrs. Liu's hands kept on her hands, and she also intermittently said that Cheng Jinzhou was not good.

Liu Bin just smiled, and when the hot towel on his face was removed, he breathed a sigh of relief, tilted his head and asked, "Shuang'er, what do you think?" ”

Liu Qingshuang shook her head lightly and said, "Shuang'er just doesn't understand why Daddy values him." ”

She fought back in a well-behaved roundabout.

"This sentence is well handled, 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 weaker." En......, give Meng Da and Meng Er to him. ”

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

"It is only such a warrior who is worthy of a great star warlock." Liu Bin tilted his head slightly and said, "I have always been very accurate when I look at people." ”

……

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