Carefree Prince In Tang Dynasty

"Oh?" Yuan Tiangang frowned, "Your Highness is right, solve all problems?" He subconsciously felt that Li Xin was bragging.

You know, there are thousands of changes in graphics. Sometimes, two seemingly similar graphics have to use completely different ideas to get the answer. In this way, how can there be a common method?

However, Li Xin nodded and said, "It's indeed everything."

After speaking, he began to write and draw on paper, showing bit by bit how to establish the coordinate system, how to mark the coordinates of points, how to calculate the distance between points, and then to the equation of a straight line, the equations and more.

Perhaps it was due to the fact that he had worked as a tutor in his previous life to earn tuition fees. Li Xin talked about these contents with ease, and he was very clear and easy to understand. This is Li Xin's belief, since he has the money, he should do things well. At that time, the student he tutored was really lacking in aptitude, but he still tried his best to explain the knowledge points clearly, and he was worthy of the tutoring fee paid by the student's parents.

God knows how many hairs he lost by staying up late every day preparing handouts? Fortunately, the parents of that family were also generous. Seeing that their children's grades had improved under Li Xin's guidance, they generously raised Li Xin's salary, which made Li Xin very grateful.

Unexpectedly, when talking about these contents now, Li Xin is already the prince of Datang.

Analytic geometry is the abstraction of geometry, transforming concrete graphics into abstract algebraic problems. This is an important change in thinking, and many people will encounter difficulties in the process of this step of transformation. Li Xin is well aware of this point, so he intends to explain this point with special emphasis.

Unexpectedly, after pondering over the paper in front of him for a while, Yuan Tiangang sighed: "That's it! Turn points and lines into formulas, the formulas are lines, and the calculated solutions are points. Complicated cuts and complements are indeed all graphics can be transformed in this way."

Li Xin blinked in confusion: Damn, did this guy understand so quickly? If this was born in later generations, he would be a proper Qingbei Miaozi!

All right, the smarter Yuan Tiangang is, the less Li Xin's workload will be. After Li Xin gave a general explanation, Yuan Tiangang quickly understood the core idea of ​​analytic geometry and mastered the most basic formulas.

Li Xin, who was concentrating on explaining, did not notice that apart from thinking about analytic geometry, Yuan Tiangang was also a little shocked by the genius idea of ​​the coordinate system. Yes, genius idea.

People who can find a specific solution to a certain problem or a certain type of problem are smart, but they may not be the smartest. A person who is really smart and truly worthy of being called a genius should be the one who sees through the key to the problem, summarizes the core of the problem and gives a solution.

Perhaps the method of using the coordinate system seems stupid and has no aesthetic feeling, but it is a practical way. Although, the earliest inventor of this method was actually Descartes, but now? Don’t ask, it’s Li Xin.

Only then did Yuan Tiangang put away his contempt, and turned to admire Li Xinsheng. He knew that with his talent and learning, he might be able to solve some difficult problems, but for Li Xin, as long as he had enough time, any problem could be solved. The gap between them cannot be counted.