≤What's the differnece between codomain and range? Is the range a subset of the codomain? And the codomain basically contains all possible values or elements the set R (Range) can contain? For example: Let f(x) = x + 1 be a function from the set of real numbers (0≤x≤4) to the set of integers. Codomain = Set of integers Range = 1≤f(x)≤5 where f(x) is an integer. Now what if f(x) = x + 1.1 be a function from the set of integers (0≤x≤4) to the set of integers. Then is the range an empty set?