# Unary Operation

## Unary Operation

In a set, an internal operation under which an element in this set is made to correspond to a new element in this set.

### Examples

Operations like finding a square root, raising to the square, cosine, taking the inverse or opposite of a number are unary operations.

They are represented by the symbols $$\sqrt{\space }$$, (  )$$^{2}$$, cos, (  )$$^{-1}$$ and –(   ).