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Feb
7
accepted Is there any partial sums of harmonic series that is integer?
Feb
7
comment Is there any partial sums of harmonic series that is integer?
@Travis , if you could put your two comments into an answer i can accept it. was about to ask how to generate such things next :) you preempted my question
Feb
7
comment Is there any partial sums of harmonic series that is integer?
yep, the second one, was that obvious to you?
Feb
7
asked Is there any partial sums of harmonic series that is integer?
Feb
4
answered How do I evaluate this sum :$\sum_{n=1}^{\infty}\frac{{(-1)}^{n²}}{{(i\pi)}^{n}}$?
Jan
28
awarded  Famous Question
Jan
25
comment How to find the limit of a sum of reciprocals $\lim_{n\to\infty}(1 + \frac{1}{2} + \frac{1}{3} + \cdots+ \frac{1}{n})$?
Strange, duplicate elementary problems getting too much upvotes.
Jan
25
comment How to find this limit : $\lim_{n \to \infty} \frac{2-\sqrt{2+\sqrt{2 +\sqrt{2+ \cdots n \text{ times}}}}}{4^{-n}}$
What have you tried? Where is this question from?
Jan
25
revised Sum $\sum_{n=1}^\infty \log\left(\frac{(n+1)^2}{n(n+2)}\right)$
edited title
Jan
24
comment Coefficient of $x^{50}$ in the expansion of $\prod_{n=1}^{52}{(x+n)}$
any hints on what you have tried, what about coefficints of $x^0,x^1,x^2 $?
Jan
24
comment The name of the sum $\sum_{i=0}^n \frac{1}{m-i}$
This is not a different series than finite harmonic series , since it can be written as difference of two harmonic series with different uppper index or just one harmonic series with lower index starting at higher number,
Jan
22
revised Sum of $\sum\limits_{n=0}^{\infty} (2n+1) (\frac{1}{2})^n = 1+\frac{3}{2}+\frac{5}{4}+\frac{7}{8}+\frac{9}{16}+…$
added 2 characters in body; edited title
Jan
22
comment Derivative of a vector with respect to a matrix
Also, I like your thinking, just make it explicit as what the definition should be.
Jan
22
comment Derivative of a vector with respect to a matrix
That totally depends on definition being used.
Jan
19
comment is this correct $\lim_{ n \to \infty} \sum_{k=2^n}^{2^{n+1}} \frac{1}{k}= \ln 2$?
yes, now it is easy with your result.
Jan
19
asked is this correct $\lim_{ n \to \infty} \sum_{k=2^n}^{2^{n+1}} \frac{1}{k}= \ln 2$?
Jan
16
awarded  Nice Question
Jan
15
comment How many dots do I have to write?
You wont be doing the dots, you will use \cdots tex, latex,mathjax as so $\cdots$
Jan
14
accepted Example of two analytic functions that differ at countably infinity many point
Jan
14
comment Example of two analytic functions that differ at countably infinity many point
@CameronWilliams : is it even possible with the case analytic everywhere? I didnt think it would, but that is not a proof of course