The expression with (-1) as its base , having x as it's exponent will be written as
\(\rightarrow (-1)^x\)
→The function will yield a Positive product if
x=Even Integer=E
\(\rightarrow (-1)^{E}=1\)
→And ,Negative Product
x=Odd Integer=O
\(\rightarrow (-1)^{O}=-1\)