Hi all,

I was wondering for the following series:

$\displaystyle

\sum_{n=1}^{\infty}\frac{(-1)^(n-1)(-1)^n}{n}

$

NOTE: in the numerator it is meant to be (-1)^(n-1) times by (-1)^n .... sorry i can't it get the code to work

are you allowed to let a_n = (-1)^n/ n and say that since a_n is not >0 for all n>=1, therefore the series diverges?

Thanks in advance,

ArTiCk