Sets, Relations...

If R and C denote the set of real numbers and complex numbers, respectively.Then, the function f : C →R defined by f(z)= |z| is

If f : N —> N defined by f(x) = X²+ x + 1,x ∈ N, then f is

The mapping f : N → N given by f(n) = 1 +n², n ∈ N, where N is the set of natural numbers, is

A function f : A → B, where A = {x : -1 ≤ X ≤ 1} and B = {y : 1 ≤ y ≤ 2} is defined by the rule y= f (x)= 1+ x². Which of the following statement is correct?

The function f : R → R given by f(x)= x³-1is

If A = [-1, 1] and f : A → A is defined as f(x) = x|x|,∀ x ∈ A, then f(x) is

The function f : R → R defined by f(x) = (x -1)(x -2)(x - 3)is

The function f : X → Y defined by f(x) = sin x is one-one but not onto, if X and Y are respectively equal to

If R denotes the set of all real numbers, then the function f : R → R defined by f(x)= lxl is