Question

The function f : R → R defined by y = f(x) = 5 for each x ϵ R is

• A. Modulus function
• B. Constant function
• C. Identity function
• D. Signum function

Answer 1

The correct option is B

Constant function

A function f: R → R defined by y = f(x) = c, x ϵ R where c is a constant and each x ϵ R is called a constant function.