Generally speaking, let the range of function y=f(x)(x∈A) be C. If there is function g(y) everywhere, such function x = g(y) (y ∈ c) is called function y = f (x) (x ∈).

The definition domain and value domain of the inverse function x=f-1(y) are the definition domain and value domain of the function y=f(x) respectively. The most representative inverse functions are logarithmic function and exponential function.

Tips for learning mathematics

1, you should be good at thinking when learning mathematics, and the answers you come up with are far more impressive than those others say.

2. Prepare well before class, so that we can better digest and absorb the unknown knowledge points in math class.

3, the mathematical formula must be memorized, and it must be deduced and can be deduced.

4. The most basic thing to learn mathematics well is to master the knowledge points of textbooks and exercises after class.