Recommend a website, Mathematical music （ https://shuxuele.com ）

How to put it? I'm not good at math, but I'm not hopeless. In the pursuit of student career, the basic situation is: good teachers, good grades, bad teachers, poor grades. Unfortunately, I met poor teachers more often.

I didn't feel anything before. When I grow up, who will study mathematics. Later, I encountered some problems in my life. For example, I didn't even understand the concept of interest. I couldn't distinguish between monthly interest rate, annual interest rate, equal principal and interest and equal principal. Then, I was confused about the future. I didn't know how to choose. I saw some popular science articles that explained the uncertain future from the perspective of probability theory. I wanted to see MIT's Introduction to Probability. Only then did I know that the so-called teaching materials were very different. Foreign mathematics textbooks were good. But there is another situation. You know that the textbook is well written, but the mathematics is interlinked, and some foundations you don't know can't go on at all. So I started to turn to the book Thomas Calculus again, and then the problem came again. Because the English foundation is weak, I looked at the tenth version of Thomas Calculus, which is a very awkward translation, After reading many concepts for three or four times, I didn't know what the translation was, so I searched and found this website called Math Music, which was a treasure.

This website is translated from an English website. The explanation of every mathematical concept is of no great detail. It is really broken and broken. It can be said that the concept of logarithm, natural base, radian, inverse function, etc., which was not understood when I was studying in the past, seems to have opened the two channels of supervision. I didn't expect it to be so understood. It suddenly dawned on me that most of the time, you are not stupid, but you have not seen good things. You met a paste teacher who read the book. As a result, you learned to learn how to paste yourself, then gave up, and then found a reason to comfort yourself. If you can't comfort yourself, people will not live.

Of course, talent absolutely exists, and there is a big gap between people. In essence, I don't want to be a mathematician or anything. I just find that I need the basics when I read some books, and then try my best to understand them.

It can be said that the content of this website is suitable for most ordinary people and most people who want to understand the world logically and rationally. If you have children, you can let them have a look at it. No matter from the perspective of illustration or design, it will definitely make them interested in mathematics.

Thank you for the Internet. It's also a pity that if I had such a mentor when I was studying, I might have another life.

Finally, I want to say: whether you want to admit it or not, the world is essentially a group of people who are good at mathematics are cutting the leeks of poor mathematics.