Aircraft is like a super luxurious air yacht. It has faster speeds than a boat, larger space than an aircraft, and of course more expensive prices. Even for astrology warlocks, it is a high-level luxury.

The interior of the boat is luxuriously decorated, with the wall curtains made of silk and silk as the edges, wrapping the surface. The ground is covered with thick wool carpets, and the soft soft fur covers the foot surface, cowhide, deer skin, bear skin and other precious furs are randomly locked on the edge of the corridor for people to rest and talk for temporary rest. Some famous calligraphy and paintings are even framed and laid in conspicuous places. Considering weight and factors, wooden or stone materials are rarely used on the boat, but after reasonable design, they will make people feel solid, which can even be regarded as a psychological research.

Cheng Jinzhou went up the next floor and found the captain's lounge in the rear cabin. The door was closed like other rooms. Xiao Cheng knocked it with a little hesitation, and then said: "Sir Liu Kuangxing?"

"Jinzhou." Liu Kuang's slow voice came from inside, and the door opened silently.

In the room, the sorcerer Wang Linghexing and the sorcerer Liu Kuangxing were both there. They each held a quill pen and were actually doing calculations on the whiteboard.

Cheng Jinzhou said in surprise: "You are starting to study now?"

Liu Kuangxing's sorcerer did not look back and smiled meaningfully: "Time is not waiting for me. At any time, you can only better appreciate the scenery below by climbing to a higher point."

If it were two or three days ago, Cheng Jinzhou might have fooled it, just like his previous life. The playboys can always find shortcuts in Zhongnan, but when they can't find it, they often have no way out. As for now, seeing the great power of power and the loss of dignity without power, Cheng Jinzhou is a little afraid to wander.

However, the playboy is a playboy after all. He thought about striving for progress, but he did not have any practical actions. He just watched the two astrology warriors write there stupidly, without even a clear sense of direction - in fact, there was nothing he could study: he had either never learned the middle-level mathematics or had a slight understanding, but it was difficult to copy; there was no problem with using modern mathematics, and if he wanted to reproduce the verification process, it far exceeded the scope of the ability of a cheating doctor; modern mathematics was the focus of his learning, but it was only a level of 60 points. If he wanted to study something new by himself - that was what Dr. Cheng's father and Dr. Cheng's mother did, not a category that he could contact with, a cheating doctor.

Perhaps, growing up quickly is what you need most, Cheng Jinzhou thought strangely.

Seeing that he was idle, Liu Kuang simply threw a pen to him and said, "Come and try it too? Xiang Xin is not here, we are doing it a little slower."

Cheng Jinzhou waved his hands repeatedly and said, "I am here to thank you."

He was a little afraid to really go into battle. Even if he did a simple question, the simplified process, the speed of reaction, and the proficiency of formulas would affect the speed of the on-site scene. Cheng Jinzhou was worried that he would be exposed in two minutes.

Liu Kuang thought he was modest, shook his head and smiled, "I have already thanked you. If you really want to thank you, please help me make pictures."

As he said that, he turned around and said, "We are going to divide this figure now. Jinzhou, you can try to find its extreme value and range."

What we studied was to analyze the graphic trajectory of geometry, which made Cheng Jinzhou glad that Dashun Dynasty or Liu Kuangxing's sorcerer chose to deduce equations from trajectory rather than first studying equations and then deriving trajectory. The former was Descartes' research direction, and the latter was Fermat's research direction. In comparison, Fermat's thoughts were more natural and closer to ancient Greek thought, with strong classical colors, and Descartes was slightly off-the-strait, but his work was also more breakthrough--facts proved that Descartes contributed more to the development of mathematics, so in this regard, students mostly studied Descartes as the model, and Cheng Jinzhou was the same.

Perhaps it is precisely because the astrology warlocks do not agree with Greek classical mathematics such as Euclidean geometry that they can develop more according to their needs, which can be considered as entering the familiar category of Cheng Jinzhou. If Liu Kuang and others were following the Fermat path, Xiao Cheng would have to pretend to have lost his memory, besides being stunned and having a stomachache.

Dr. Cheng Da held a pen and glanced at the progress of Wang Linghe Xingshi's sorcerer with his right eye. He slowly calculated the extreme value, and did not dare to go ahead or fall behind. It was very painful. Fortunately, the problem was quite simple, so he deliberately skipped the calculation steps and tried to get the answer directly so as not to be discovered beyond the ideas and calculation methods of the times.

Liu Kuang did not notice this issue, but asked intermittently while dealing with the entire figure: "I have submitted your achievements in balance design to the association for you last time... After the review is approved, there should be a response... You can reach the one-star warlock with 6 points of contribution... Don't worry, after all, someone needs to use your results, and he needs to complete the research and submit it to the association again... There will not be much association contribution in a short period of time, and everyone writes it very slowly... But 1-star warlock is only 10 points..."

He remembered to say one sentence after another. If he was thinking or calculating, he would pause for dozens of seconds. A short paragraph made him say five or six minutes. Cheng Jinzhou felt sleepy in his neck, but he just pretended to be calculating. He knew the best time and energy to write a math paper. In fact, relying on plagiarism to complete a inferior math paper would also waste a month's guild CD. How many people could read his results report without saying it. After reading the report, they would still be able to use it. They could also write papers recognized by the Star Warlock Association, which would increase his contribution to him. After selecting it in this way, the number would naturally be very small. If it were not for the introduction of Liu Kuangxing's sorcerer last time, he would not have easily obtained 4 points of association contribution.

Therefore, without Liu Kuang's explanation, Cheng Jinzhou did not focus on gaining the contribution points of the association. This must be a long-term job. Once he persists, he will have high returns. However, it is unrealistic to make short-term profits.

In about 10 minutes, Cheng Jinzhou completed an extreme value calculation of part of the functions and hung them on the whiteboard and handed them to Liu Kuang for comprehensiveness. The latter took a look first and praised: "Yes, some parts are better than Xiang Xin's handling, but the process is simplified too much."

He frowned and said, "Your way is a bit too..."

"Is it not formal? I learned it myself, so..." Cheng Jinzhou explained things that were not so genius in a genius tone.

Liu Kuang nodded without comment, frowned and said, "Cheng Jinzhou, do you think it is meaningful to find the maximum and minimum values ​​of a curve?"

This sentence is not a casual question. Although it was the maximum and minimum values ​​he asked Cheng Jinzhou to do, whether it should be done or whether it is meaningful is another question, and it is a very important question.

Cheng Jinzhou was speechless for a moment and didn't know how to answer it. As a famous case in the history of mathematics, Descartes insisted on the essential difference between "straight" and "curve", believing that only straight lines have certain values, so he refused any exploration of finding the length of the curve and attacked Fermat's maximum and minimum values, believing that it violated strict deduction reasoning - there is no Descartes among the astrology warlocks, but the same problem will still be raised, just like people will want to know four times six after knowing the result of four times five.

For astrology warlocks, the determined numbers are quite useful. The value of curves is often dependent on calculations. If we insist on the difference between "straight" and "curve", it is equivalent to giving up the practicality of analyzing geometry. Liu Kuang performed more confusing than Cheng Jinzhou expected, because he took the Cartesian route, but he unconsciously wanted to solve the problem in a similar way to Fermat. Although there were no Fermat and Descartes in the Daxia Dynasty, animals such as the Pros and Oppositions would always live on the same soil.

"I'm not sure." Cheng Jinzhou didn't even dare to shrugg the shoulders.

Liu Kuang actually didn't expect Cheng Jinzhou to solve such a theoretical problem, but just stretched and said, "At this year's association, Jiang Huangxing's sorcerer is about to attack."

"Is he also a fourth-level star warrior?" Cheng Jinzhou asked carefully. The creatures called fifth-level star warriors are extremely rare. With the level of the Daxia Dynasty, fourth-level star warriors are the top.

Wang Linghe echoed and said, "Is it the royal star warrior, the fourth-level star warrior, or the four-star warrior."

The higher the star rating of a star maker, the more valuable it is. The second-level star maker may be more stylish than a two-star maker, but when it reaches level 3 and level 4, it is often more valuable than a star maker of the same star. In addition to a few people, high-star makers often have high levels. Liu Kuang Xing Warrior is a fourth-level star maker and a three-star maker. It can be said that he has some disadvantage in theoretical astrology.

The high-level struggles of the astral warriors are not something that a little shrimp like Cheng Jinzhou can understand. He could only laugh twice and said, "Liu Kuangxing's sorcerer will definitely win."

"Hope." Liu Kuangnu said in a confident tone: "If we can occupy the commanding heights on this issue, I think that in the next session, it will be no problem to become a four-star warlock. Are you interested in Cheng Jinzhou?"

"ah?"

"I need a bigger team to complete these tasks." Liu Kuang knocked on the whiteboard: "You also want to learn astrology systematically. Most of the astrology warlocks in my team have been formally trained."

Except for freaks like Cheng Jinzhou, there are probably few astrology warlocks who do not undergo formal training. Cheng Jinzhou raised his eyebrows and refused: "I can't help much."

Since joining Liu Bin's Transportation Command, the sorcerer Liu Kuangxing seemed to have always wanted to pull him onto the ship. The more he did, the less he dared to agree.

Liu Kuangxing's sorcerer was also familiar with his temperament. He did not force him, but only replaced him with a new whiteboard and said: "Let's continue with the next proposition."

It seems that he prefers to make a reality.

As long as he did not get involved in some complex vortexes, Cheng Jinzhou would not mind getting closer to several astrology warlocks. When he arrived in the capital, this relationship would probably be his only support.

Time always passes quickly when answering questions, especially when using knowledge. If it is smooth and smooth, it is also quite exciting. Liu Kuang will not give Cheng Jinzhou a difficult part. In the early stage of research, many of the contents were learned step by step by step by step by step, and it is extremely smooth to do.

When Xiang Xin returned to the cabin, she found that she basically didn't have to do anything else. She had no choice but to help the three of them. Her understanding of mathematics and physics was barely considered an excellent and serious freshman, and her vision was completely impossible to compare with Cheng Jinzhou in terms of vision. What's more, she was in the new primary stage of analytical geometry.

Cheng Jinzhou sighed while doing it, that the mathematical development of astrology warriors was too unbalanced. Many researched in practical geometry such as trigonometric functions, but few other theoretical contents were touched upon. He was also a doctor of theoretical physics. If he changed to a doctor of mathematics, he had to be angry, anxious and frustrated until he died.

I don’t know how long it took, but the servant knocked on the door gently. After receiving Liu Kuang’s response, he pushed open the door and said, “Masters, lunch is ready.”

"What should I eat today?" Xiang Xin was so bored that she asked quickly.

"Chicken sauce cod, iron fire fine lamb chops, wine-scented floating peels and mixed sausage, and two pots of sake." After kneeling down, the servant stepped back and went out the door. The airship was limited and the rules had also changed.

"My chef, the thin lamb chops are very good. Let's try it." Liu Kuang stretched out his waist and stood up and smiled. "The lamb chops were taken from the lamb about 20 kilograms. As long as the three ribs in the middle are a little fat on the edge, the oil was almost burned clean after the fire, but it would be wrapped a little on the meat, which was very tender."

"I'm drooling all the time." Cheng Jinzhou said politely.

"Cooking on an airship is not easy, and the dishes must be prepared below. So it is the hardest to walk long distances."

Cheng Jinzhou couldn't help but want to slap his forehead when he heard this. The airship was a little slower, but it was absolutely stable, and its comfort level was at least as high as a private jet in later generations. Even if it was flying for a long distance, it was more comfortable than an ordinary luxury mail ship. It seemed that the fourth-level star warlock was also a picky person.

Xiang Xin packed the whiteboard next to him. When Cheng Jinzhou was ready, he took out a small silk bag from under the table and handed it to him and said, "This is Cheng Yi today, please accept it."

Xiao Cheng took it over for no reason, and felt his hand sinking, and he couldn't help but say, "This is..."

"The star warlocks all participated in this kind of discussion. Cheng Yi took it." Xiang Xin blinked in a narrow voice and said, "The scepter I gave you came from here."

Wang Linghe and Liu Kuangxing both nodded at him with a smile and walked out the door.

Cheng Jinzhou himself landed behind and poured out the things in the silk bag on the table. There were exactly 4 small silver ingots. There was no need to weigh them with his hands. You could know that they were standard kuping silver - the silver stored in the imperial court. The standard 10 taels were usually only used for large-scale transactions and rarely circulate between the market, so there was less wear and tear.

If it is a normal grain price range, 4 taels of silver can read 10,000 words, and 40 taels of silver can read 100,000 words. The daily salary can be just about to buy a book from the library. If the library's books are regarded as equivalent, his daily salary will be about 30 yuan. If it is calculated 20 days a month, the salary is 600 yuan. In a small town like Shaonan, it is really a barely enough to survive, which is very similar to its situation.

Of course, 80 taels of silver per day is still very scary in the Daxia Dynasty, and the monthly income of 1,600 taels of silver is even more than the income of most shops. Cheng Jinzhou was secretly shocked. It seemed that a star warlock without a level seemed to be quite rich. As a guy valued by the fourth-level star warlock, it was difficult for him to understand the life and mentality of the lower-level star warlock.

...

Bird Song: Let’s merge the two chapters. The update volume was not completed yesterday, I’m very sorry.
Chapter completed!