Question

Let f : N × Z → Z × Z be given by f(x, y) = (x + y, xy).

a) What is f (2, 2)? What is f (1, 2)? f (2, −1)?

Answer 1

To find the values of f(2, 2), f(1, 2), and f(2, -1) for the given function f(x, y) = (x + y, xy), substitute the given values into the function.

Step-by-step explanation:

To find the values of f(2, 2), f(1, 2), and f(2, -1) for the given function f(x, y) = (x + y, xy), we substitute the given values into the function.

For f(2, 2), we have f(2, 2) = (2 + 2, 2 * 2) = (4, 4).

For f(1, 2), we have f(1, 2) = (1 + 2, 1 * 2) = (3, 2).

For f(2, -1), we have f(2, -1) = (2 + (-1), 2 * -1) = (1, -2).