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Mar
31
awarded  Nice Question
Feb
4
awarded  Notable Question
Nov
29
awarded  Popular Question
Oct
14
accepted How do I partially differentiate the multivariable equation $z^2=x^2+y^2$?
Oct
14
accepted A poll carried a survey to examine the approval rate of a policy in a country. Which is most appropriate?
Oct
14
accepted Show that there is a non-zero constant $a$ such that $T_1(v)=aT_2(v)$ for all $v\in R^n$
Oct
14
accepted Is there a faster way to do this? Find an orthogonal matrix $P$ and a diagonal matrix $D$ such that $A=PDP^T$
Oct
14
accepted Question about Notation. What does this means? $f[0]=1, f[0,1]=-1$
Oct
14
accepted How do I generate a sparse invertible 10000 by 10000 binary matrix with 30 to 50 non-zeros per row?
Oct
14
asked How do I partially differentiate the multivariable equation $z^2=x^2+y^2$?
Sep
28
awarded  Popular Question
Sep
22
awarded  Popular Question
Sep
14
awarded  Popular Question
Aug
21
comment Intuition behind $(-\frac{1}{2})! = \sqrt{\pi}$
I do not have the answer, but I was wondering how does one define the factorial of a negative non-integer value?
Aug
21
comment Permutations of a Multi-Set
This solution is very astonishing, and I loved it. +1!
Aug
8
accepted Check my solution: For the recurrence $a_{n+3}=a_{n+2}+a_{n+1}+a_n$ where $a_1=a_2=a_3=1$, prove that $a_n\leq 2^{n-2}$.
Aug
8
asked Check my solution: For the recurrence $a_{n+3}=a_{n+2}+a_{n+1}+a_n$ where $a_1=a_2=a_3=1$, prove that $a_n\leq 2^{n-2}$.
Aug
6
accepted Derivation of the density function of student t-distribution from this big integral.
Aug
4
awarded  Good Question
Jul
2
comment How do I generate a sparse invertible 10000 by 10000 binary matrix with 30 to 50 non-zeros per row?
ah! haha! thanks!