 Solution

ID: past-exam-of-the-year-1-of-the-computer-science-course-of-the-university-of-oxford/2013/discrete-mathematics-probability-and-continuous-mathematics/1/d/i/solution

The image of a function is the set of values actually attained as its argument ranges over its domain of a function:

im f = f (A) = {f (a) : a \in A} = {b \in B : \exists a \in A, f (a) = b} .

B

, and need not equal

B

 New to topics? Read the docs here!