Let the domain of F (x + 1) be (1,2). It is urgent to find the domain of F (x)

Let the domain of F (x + 1) be (1,2). It is urgent to find the domain of F (x)


Because the domain of F (x + 1) is (1,2),
So 1



The difference between domain and interval


Domain: the value range of the independent variable
Definition interval: the value of function y in an interval increases (or decreases) with the increase of independent variable x. the value range of X when constant holds
The domain is larger than the interval, and the interval is a subset of the domain



If the domain of definition of function f (x) is [a, b], and b > - a > 0, it is difficult to find the domain of definition of function g (x) = f (x) - f (- x)


The definition of G (x) is as follows
{a