A function f from the set of natural numbers to integers is defined by:\(f\left( n \right)=\left\{ \begin{matrix} \frac{n-1}{2}~when~n~is~odd \\ -\frac{n}{2}when~n~is~even \\ \end{matrix} \right.\)then function is:

A function f from the set of natural numbers to integers is defined by

1.	A function f from the set of natural numbers to integers is defined by:\(f\left( n \right)=\left\{ \begin{matrix} \frac{n-1}{2}~when~n~is~odd \\ -\frac{n}{2}when~n~is~even \\ \end{matrix} \right.\)then function is:
A.	one - one but not onto
B.	onto but not one - one
C.	one - one and onto both
D.	neither one - one nor onto
Answer» D. neither one - one nor onto

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