The power of astral warlock mainly comes from three aspects: talent, star array, and various calculation abilities trained by acquired training.

Square and square are the simplest calculations, so it is naturally not difficult for astrology to make use of this. However, if you use oral calculations to square 1369 (37 square value), there are not many shortcuts except for being familiar with and sensitive to numbers.

In the eyes of young astrologists, a person who remembers 37 square meters (Note 1) will obviously remember more simple calculation results, and these are the basis for increasing computing power.

Even in the 21st century, those genius mental arithmetic boys first rely on memory and memorize many common formulas and numerical calculation results to show amazing computing power.

At the 16th century level, as a 12 or 13-year-old boy, Cheng Jinzhou's performance was obviously beyond what some gentlemen expected.

How could they know that Cheng Jinzhou judged the third digit based on the number of Pythagoreans. If he hadn't read "The Origin of Geometry" frequently in recent days, his sensitivity to these numbers would be far less than that of the mathematics student who was preparing for the exam.

In any case, Liu Kuang had a great affection for Cheng Jinzhou. The young man who looked thin and weak also had the "demeanor" of astrology and "working hard". His voice became softer: "I solved it very quickly. That small bag of decisive things is indeed a gift that should be given to you."

It proved that Cheng Jinzhou was not lucky, so the gifts were naturally given.

A light suddenly appeared on Cheng's mother's face.

Then Liu Kuang continued, "Then I'll ask you again."

As he said that, Liu Kuang made a quick stroke and instantly drew a standard parabola on paper several meters away, asking, "Have you seen this figure?"

Cheng Jinzhou was still praising the magical skills of the astrology warlock, and suddenly fell into a dilemma. In the era of popularization of mathematics, if anyone draws a big inverted U shape, people's first reaction is parabola, rather than the letter U that was hit by a Mitsubishi modified car. But in this era, it is really difficult to know the parabola.

After a moment, Cheng Jinzhou hesitated and said, "I've seen it."

"It seems that you have read a lot of books yourself, and the children of aristocratic families are different after all." Liu Kuang's words were calm, but the praise in his tone was something that everyone could hear.

The Cheng family does have a good library, but there is really not much about mathematics and physics.

"We call it a parabola, draw coordinate axes on both sides of it, as (0,0)..." Liu Kuang then talked about the coordinate system, which was very fast in front of everyone, but the content was very simple.

For this world, the concept of coordinate systems is already one of the cutting-edge. Knowing how to use coordinate systems means that analytical geometry begins to develop. In many cases, analytical geometry can solve many problems that ordinary geometry cannot solve. Of course, the most important thing about it is that it can be integrated with algebra and quantitatively solve geometric problems - in practical applications, determining numerical values ​​is often more important than qualitative.

Perhaps it is the need of the astral warlocks. In this regard, their development is much more than Cheng Jinzhou estimated. It seems that very low-level astral apprentices have mastered considerable coordinate knowledge.

Liu Kuang talked about it for three or four minutes, and then asked Cheng Jinzhou: "Since that's the case, can you find out the line passing through the vertex coordinates and the focus of the parabola?"

A very basic question still involves some equations. In the world where Cheng Jinzhou lives, it is a binary equation, and it was an answer that was only obtained after hundreds of years of development.

Several astrology disciples also stared at Cheng Jinzhou. Those who had just started to contact the coordinate system must be confused when facing similar problems, just like Cheng Jinzhou's fathers in his previous life. Although they received basic education from the Cheng family, they could not understand the problem of coordinates at all.

Cheng Jinzhou had a feeling of being condescending and being discriminated against. He pretended to behave and clicked on the paper weakly, and calculated casually: "25, 25."

After reading it, I found that the old man's random stroke was quite accurate.

The Cheng family looked at each other in surprise, and the sickly son Cheng in his impression seemed to be too different from the children in front of him. Of course, people would not think of unrealistic travel.

Liu Kuang continued to ask questions without comment, and soon involved simple functions, but it was obvious that these were a bit too pediatric for Cheng Jinzhou.

For doctoral students in the 21st century, primary mathematics must be extremely thorough. Since entering university, Cheng Jinzhou has rarely had such confidence.

The inquiry soon showed a trend of development. At the beginning, Cheng Jinzhou was really too excited. In addition, he didn't understand the development of mathematics in the Daxia Dynasty and said a few amazing words. Fortunately, it was not too many than normal categories - or, by the standards of astral sorcerers, the scope of normal people is broad enough.

Time passed quickly, and I even had a meal in the middle. When night fell, the Cheng family warmly invited Liu Kuang for dinner again, but the latter refused.

Moreover, in Cheng Jinzhou's eager eyes, Liu Kuang did not make any more valuable requests for accepting disciples or other more valuable requests. Although he was extremely satisfied with Cheng Jinzhou himself, he also said a lot of praise.

While not figuring out his mind, Cheng Jinzhou had to admit that trying to repeat the success of traveling through the crowd still failed.

Even Cheng's mother couldn't hide her disappointment and kept saying: "It's okay, you are still young."

In fact, for children who want to become astrology warlock, 12 is no longer young. There are always many factors to consider when formal astrology warlocks accept apprentices, and luck is one of them. After all, they do not recruit apprentices all year round.

The crowd waited for different moods and had a meal at the main house and went back to their rooms.

The red and yellow lanterns shone on the bluestone road in fog. Cheng's father walked behind his hands and walked on the left side of Cheng Jinzhou. Compared to his usual style, he was much closer.

He was also more happy than surprised at Cheng Jinzhou's performance throughout the afternoon. After a moment of silence, he said: "I don't know that you like mathematics and physics. This is also a way. If you like it, you can ask a few colleagues to send you to Xiangcheng or Beijing."

Xiangcheng is a top city in the entire south.

Cheng Jinzhou was quite moved, but soon shook his head and said, "My parents are not traveling far away. If I want to go, let's see again."

His mathematics has little to do with this era. Even the best school is meaningless.

Perhaps the first sentence was used well, and Cheng's father didn't care about Cheng Jinzhou's lazy voice, so he nodded and said, "Every three days from now on, come to my room for high school entrance examination, remember."

Cheng Jinzhou suddenly had a bitter face as if he was beaten up, and strongly opposed it: "You are usually busy with official duties..."

"That's all." Cheng's father showed the demeanor of the head of the family.

Cheng Jinzhou was helpless, and saw that his mother didn't seem to be able to object, so he settled in the second place and said: "I want to do some experiments, and I have to get some food."

"Mathematics is the right way, so you should not get involved in anything else." Cheng's father said, and changed his subject and said, "Don't waste it, let's talk to your mother for specific reasons."

Like the scholars and literati in ancient China, Cheng's father had a weak concept of money itself as long as he lived without worries.

Speaking of the inner house, Cheng's mother pondered for a moment: "In the future, let the village outside the city send 50 stones of extra grain over every month. Whatever you want, tell the housekeeper in advance."

"Okay." Cheng Jinzhou can't say whether he should be disappointed or satisfied after getting such an answer for a busy day.
Chapter completed!