3. A Function is a relation in which each
element of the domain is paired with exactly
one or more than one element of the range.
Example:
4. There are three types of functions.
1. Injective (One to one)
2. Surjective(Onto function )
3. Bijective/Invertible(one to one and
correspondence function)
5. An injective function ( one-to-one function) is
a function for which every element of the
range of the function corresponds to exactly
one element of the domain.
Example:
Domain Range
6. The function f may map one or more elements
of A to the same element of B.
A surjective is sometimes referred to as being
“onto Function”.
Example:
7. A function f is a one to one correspondence,or
a bijective,if it is both one to one or one to
(surjective and injective).
Example:
