30 60 90 solver

30 60 90 solver is a software program that supports students solve math problems. Reason: number theory is one of the oldest branches of mathematics. It has stimulated the development of many other branches, including complex number and P-progression analysis, algebra and algebraic geometry... And it is still thriving today. The research of algebraic number theory focuses on the Galois representation and the basic properties of L-function. On the one hand, it has a profound connection with the algebraic geometry envisaged by grotendick's conjecture about motive, and on the other hand, it has a profound connection with the representation of Lie groups and Automorphic representations (as explicitly required by Langlands conjecture).

In the school learning stage, the most impressive thinking framework is the formula and model, that is, all kinds of problems in the real world can be finally transformed or abstracted into specific formulas or models to solve. For example, when you throw a stone with a parabola, how far can the stone be thrown? Based on the knowledge of physics and mathematics, problems in reality will be transformed into solving a quadratic equation of one variable. The solution of the quadratic equation of one variable can be directly brought into the standard formula to get the answer. Various formula models themselves are the most basic thinking framework, because formula itself is a commonly used axiomatic post theorem obtained by human beings through induction and abstraction after studying various phenomena in the real world.

Many other textbooks simply do not realize or ignore this problem. However, the textbooks of Fang and Wang did not divide DX to get formula 6 as Thomas did in calculus, but only to formula 7. Maybe they also realized that the derivative obtained by doing this was inconsistent with the derivative obtained by the limit method. In « Preston calculus », there is no formula 7 at all, only the differential is written as Newton and Leibniz were giants of their time.

Next: study the nature (or method). Be able to discriminate concepts, which means that you really understand equations. For an equation, if it contains unknowns, it must be solved. Therefore, after you can accurately judge the equation, you are faced with how to solve the equation.