Question

Is the given relation a function? give reasons for your answers. {(x,3): x is a real number }

Answer 1

Answer:

Since every element in the domain has unique image, it is a function. ... Since the square of any positive integer is unique, every element in the domain has unique image. Hence, ibis a function. (iv) We have, t = {(x, 3)| x is a real number}.