Determine whether summation div or conv. Summation of [3^n * n!]/[1*4*(3n-2)]
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Originally Posted by WartonMorton Determine whether summation div or conv. Summation of [3^n * n!]/[1*4*(3n-2)] It's trivial to show that the general term sequence doesn't even converge to zero ...! Tonio
Originally Posted by tonio It's trivial to show that the general term sequence doesn't even converge to zero ...! Tonio not quite sure what you mean by this?
Originally Posted by WartonMorton not quite sure what you mean by this? It means that $\displaystyle \lim_{n\to\infty}a_n\neq 0\Longrightarrow \sum^\infty_{n=1}a_n$ doesn't converge. This is ABC in infinite series. Tonio
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