Thursday, 28 July 2016

calculus - Does this series converge or diverge? sumin=1nftylnleft(1+frac1n2right)



I have a series here, and I'm supposed to determine whether it converges or diverges. I've tried the different tests, but I can't quite get the answer.




n=1ln(1+1n2)




Answer



Hint: Recall that ln(1+x)x for x0, and use the fact that n=11n2 is convergent.


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