what is the domain and range of f(x) =square root of x-1/square root of x-1
by definition of your question, y = f(x) comes out to be 1.
So, domain of a constant function, is R, real number.
Whereas its range is the value of y, that is, 1.
Figure shows a relation between set P and Q such that x ∈ P, y ∈ Q. What is the relation, domain and range?