Mathematics

Problem

Which of the following best states the condition for a relation from a non-empty set

A

to a non-empty set

B

to be a function? a) Every element of

B

is associated with exactly one element of

A

. b) Every element of

A

is associated with exactly one element of

B

. c) Every element of

A

is associated with at least one element of

B

. d) Every element of

A

is associated with at most one element of

B