f(x) = x is called
a constant function
inverse function
step function
an identity function
In this function every element x is mapped with itself; hence it’s the identity function.
The function f : R → R defined by y = f(x) = 5 for each x ϵ R is
The function f(x)=sin(log(x+√x2+1)) is
The function f(x)=log(x+√x2+1), is