Which of the following correspondences from A to R describe a function? If a correspondence is a function, find its range. Justify your answers.
a. A is the set of college students, and B is the set of majors. To each college student corresponds his or her major.
b. A is the set of books in the library, and B is the set N of natural numbers. To each book corresponds the number of pages in the book.
c. A = {(a, b) | a ∈ N and b ∈ N}, and B = N. To each clement (a, b) of A corresponds the number 4a + 2b.
d. A = N and B = N. If x is even, then f(x) = 0, and if x is odd, then f(x) = 1.
e. A = N and B = N. To each natural number corresponds the sum of its digits.
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.