How do I evaluate this sum:
∞∑n=1(−1)n+1n2n!
Note: The series converges by the ratio test. I have tried to use this sum:∞∑n=1(−1)n+1n=ln(2) but I didn't succeed. Might there be others techniques which I don't know?
Thank you for any help
How do I evaluate this sum:
∞∑n=1(−1)n+1n2n!
Note: The series converges by the ratio test. I have tried to use this sum:∞∑n=1(−1)n+1n=ln(2) but I didn't succeed. Might there be others techniques which I don't know?
Thank you for any help
How to find lim without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...
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