Monday, 17 February 2014

real analysis - For which values of p does the serie sumlimitsin=2nftyfrac1npln(n) converge?

For which values of p does the serie n=21npln(p) converge? I'm trying to use the ratio test but I can't get a simple term in which use limit easily enough.

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real analysis - How to find limhrightarrow0fracsin(ha)h

How to find limh0sin(ha)h without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...