### Math Functions, Relations, Domain & Range

A function ‘f’ is a relation between two sets which converts an input into an output. A function with Domain ‘x’ and Range ‘y’ is denoted by **f: X->**** Y**.

__Properties of functions:__

**Injective function (One-to-One):**If f: X -> Y, then

**Surjective function(Onto): **If f: X -> Y, then

**Bijective function(One-to One and Onto):**If f: X -> Y, then

**Inverse function (f ^{-1}): **If f: X -> Y is an invertible function, then there exists ‘g’ such that g: Y -> X, where ‘g’ is called the inverse of ‘f’.

**Example:** Find f^{-1} for f(x) = 2x +3.

For More info about Math Equations and Relationships**, **connect with tutors on** Math Assignment Help!!**

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