show that if the seriesΣuk and Σvk both diverge, then seiresΣ(uk + vk) and Σ(uk - vk) may either converge or diverge
Thank you !
I am sorry but if youd like me to answer you must specify do you mean $\displaystyle \sum_{u,k=0}^{\infty}v\cdot{k}$ and $\displaystyle \sum_{u,k=0}^{\infty}u\cdot{k}$ or do you mean $\displaystyle \sum_{k=0}^{\infty}u(k)$ and $\displaystyle \sum_{k=0}^{\infty}v(k)$? or what?