Kirthi Raman
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 May12 comment Sum from 0 to n of $n \choose i$? MSE ought to incorporate some AI techniques to catch duplicate questions automatically. May12 comment Sum from 0 to n of $n \choose i$? Always google search and wiki search. Induction proof at proofwiki.org/wiki/Sum_of_Binomial_Coefficients_for_Given_n May12 revised Sum from 0 to n of $n \choose i$? edited body May11 comment Contemporary mathematician one should know about Manjul Bhargava(Harvard),Kiran Kedlaya(MIT),Soundararajan(Stanford), Ravi Vakil(Stanford) May10 comment What is the $\sum\limits_{i=0}^{\ (\log_2(n))-1)}\frac{n}{2^i}$? I did not see that (Oops!..You have already mentioned that) May10 comment What is the $\sum\limits_{i=0}^{\ (\log_2(n))-1)}\frac{n}{2^i}$? Technically $log_2 (n)$ may not give integer value. Therefore it makes sense to use the floor function, i.e. instead of $m-1$, use $\left \lfloor log_2 n - 1\right \rfloor$ May10 comment Factoring a number to get an encoded string Decoding algorithms in general has to work both ways (left to right or right to left). Instead of re-inventing a new algorithm one could also use Base-32. (stackoverflow.com/questions/641361/base32-decoding) May8 comment solving ODE using variation of parameters First find the solution to the corresponding homogeneous equation $y\prime\prime+y\prime-2y=0$ by using characteristic equation $r^2+r-2=0$ May8 revised Simplifying Logarithmic Expression deleted 94 characters in body May8 comment Popular science book on rigorous axiomatic approach Try snipurl.com/23f8po6 (Another interesting book to have) May8 answered Simplifying Logarithmic Expression May8 answered Factoring a number to get an encoded string May8 comment How to find $\int{\left(\frac{\sqrt{x+1}}{x-1}\right)^x}dx$? For $\int x^x dx$ check math.stackexchange.com/questions/141347/how-to-solve-int-xxdx (But this one here looks complicated) May7 answered Integrate $\int{2^{2x}} dx$ May7 comment convergence to infinity of$(2^n + 3^n)^{\frac{1}{n}}$ (as $n \to \infty$) @Ignace, Didier pretty much gave you a "big hint" and you don't need anything more to solve this. May7 comment convergence to infinity of$(2^n + 3^n)^{\frac{1}{n}}$ (as $n \to \infty$) @Ignace I tried to edit as much as I could. (There was no latex at all in your post). May7 revised convergence to infinity of$(2^n + 3^n)^{\frac{1}{n}}$ (as $n \to \infty$) added 50 characters in body; edited title May7 comment Solving $xy = a + b\cdot\operatorname{lcm}(x,y) + c\cdot\gcd(x,y)$ given $a,b,c$ Nice! I like it. May7 comment How many zeroes are in 100! According to WolframAlpha it would be $29$ zeros in $100!$ (trailing $24$ and $5$ zeroes inside), but if you are looking for a method, as Robert Israel said, there is no known method. May6 comment How to find the removeable or infinite discontinuity of any rational function without the factoring of the polynomial? @Victor you accepted Bill's answer, but yet havn't upvoted.