Question

In a function, an element of the range must map to exactly one element of the domain.
True
False

Answer 1

false.

State is true is one element of domain maps to one and only one element of range.

Example: f(x)= x*x is a function we are all familiar with.

consider f(x) = 25 maps to two different elements of domain; namely 5, -5
however a given element of domain say -5 has only on value that it maps to in range; 25.

Answer 2

So whats next?.