For every modern civilized person, it is necessary to go through the school education stage to enter the society and survive in the society. In short, social development requires education, and the social cost of education is very high. This is common sense.
Looking back, In 1675, laveniz invented the infinitely small method (containing logical conflicts), which promoted the development of astronomical observation and sailing. From 1763 to 1775, Watt's steam engine began to provide impetus for social industrial production. In 1875, the (ε, Delta) Extreme theory laid the theoretical foundation of calculus and developed mathematics. On the basis of mathematics, the theory of relativity, quantum theory, and the use of nuclear energy emerged and developed around 1900.
In the first half of last century, we had more than one turmoil in China until the founding of the new China. In 1956, the Central Government issued a call to enter science, which promoted the popularization of the "calculus tutorial" and trained a large number of mathematical talents. Since then, the (ε, Delta) Extreme theory has dominated the domestic education system. In 1976, J. keosler launched a textbook basic calculus (an infinitely small method) suitable for Calculus Teaching in lower-grade universities based on A. Robinson's "non-standard analysis" (1960 ). The infinitely small calculus based on the theory of set theory is slowly moving forward in China and intermittently until the opening of the calculus reading room in August 18 this year.
What are the advantages of calculus Network Reading Room? In fact, the calculus reading room is just a "guiding document" for reading and studying the infinitely small calculus ". Search for "calculus Reading Room" to open the guide file and enter "preparation status ". For example, when you click "section 1.1", the following words will appear on the display screen of your smartphone, tablet or desktop"
"In grade school and high school
Mathematics, the real number system is constructed gradually in several stages. beginning with the positive integers, the systems of integers, rational numbers, and finally real numbers are built up. one way to construct the set of real number
Is as the set of all nonterminating decimals (infinite decimals )".
That is to say, no matter where you are, no matter when you are, or what "internet terminal" you are using, calculus learning is at your fingertips. Some may say that learning calculus is not good at English. If you do not know English, do not study calculus. To be honest, calculus has been polluted and changed by our "mother tongue. For example, the function concept ." Letter ", envelope also. The intuitive meaning of "function" is the "Number" placed in the box, which is far from the original meaning (function. Learning mathematical calculus in English is easier.
Do you want to "help each other" to learn mathematics (calculus "? Fundamentally speaking, mathematics is the gymnastics of thinking. Only individuals who "read books", insist on independent thinking, and ponder over and over again can learn the "Essentials ". It's really hard to learn mathematics when reading a comic book. In fact, learning an infinitely small calculus only relies on self-learning. No one around me really knows what an infinitely small is. That is, when we hear the story, we know the name of an infinitely small object, and we cannot tell what an infinitely small object is. Therefore, the major slogan in front of the calculus reading room is "study with great concentration, keep quiet", study the infinitely small calculus, and what "Help each other", it seems that it has returned to the "Great Leap Forward" of the 1950s S ". Whining!