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"You have enemies? Good. That means you've stood up for something, sometime in your life" - Winston Churchill


May
12
revised Sum from 0 to n of $ n \choose i $?
edited body
May
11
comment Contemporary mathematician one should know about
Manjul Bhargava(Harvard),Kiran Kedlaya(MIT),Soundararajan(Stanford), Ravi Vakil(Stanford)
May
10
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)
May
10
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 $\left \lfloor log_2 n - 1\right \rfloor$
May
10
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)
May
8
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 $r^2+r-2=0$
May
8
revised Simplifying Logarithmic Expression
deleted 94 characters in body
May
8
comment Popular science book on rigorous axiomatic approach
Try snipurl.com/23f8po6 (Another interesting book to have)
May
8
answered Simplifying Logarithmic Expression
May
8
answered Factoring a number to get an encoded string
May
8
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)
May
7
answered Integrate $\int{2^{2x}} dx$
May
7
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.
May
7
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).
May
7
revised convergence to infinity of$ (2^n + 3^n)^{\frac{1}{n}}$ (as $n \to \infty$)
added 50 characters in body; edited title
May
7
comment Solving $ xy = a + b\cdot\operatorname{lcm}(x,y) + c\cdot\gcd(x,y)$ given $a,b,c$
Nice! I like it.
May
7
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.
May
6
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.
May
6
comment Find $s$ and $t$ with substitution?
Follow Andre's answer you get $s=9, t=\frac{25}{4}$
May
6
comment Solving an integral
@Jon You have only partially corrected your mistakes. It should be $\sqrt{24}y-1$ and not $\sqrt{24}(y-1)$