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 [latex]\sqrt{\space }[/latex], ( )[latex]^{2}[/latex], cos, ( )[latex]^{-1}[/latex] and –( ).
