Question

What is identity function??

Answer 1

Answer:

In mathematics, an identity function, also called an identity relation or identity map or identitytransformation, is a function that always returns the same value that was used as its argument. In equations, the function is given by f(x) = x.

Answer 2

Answer:

Identity function =

Every function or element is associated with itself then f is also called identity function. and f is denoted by Ia.

Thus, Ia (x) = x