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May
6
comment What are the limitations /shortcomings of Fourier Transform and Fourier Series?
Fourier transform is only restricted to imaginary axis. Thus, sometimes in these cases, we need to use Laplace transform.
Sep
24
awarded  Autobiographer
Feb
21
answered Help proving basic group properties
Feb
5
comment Examples of Talagrand's inequality
math.ucla.edu/~nickcook/talagrand.pdf This link may help.
Feb
3
comment How many triangle can be drawn with those points?
As the different distribution of the points may result some very different answers. You need to add the condition here.
Dec
13
revised Find the value of c
improved formatting
Dec
13
suggested approved edit on Find the value of c
Dec
12
awarded  Organizer
Dec
12
revised When is $|f(x)|$ equivalent to $f(|x|)$
Improved formatting.
Dec
12
suggested approved edit on When is $|f(x)|$ equivalent to $f(|x|)$
Dec
12
awarded  Supporter
Dec
12
comment Random sampling of 100 data points from a binomial population
I have changed the data.
Dec
12
awarded  Editor
Dec
12
revised Random sampling of 100 data points from a binomial population
added 3 characters in body
Dec
12
comment Random sampling of 100 data points from a binomial population
You said 40 is the mean..so let me redo again. 40 should be the number of trial.
Dec
12
answered Random sampling of 100 data points from a binomial population
Dec
12
comment Uniform convergence of $\sum\limits_{n=1}^\infty \frac{(-1)^n}{ne^{nx}}$
Maybe you can try to use the ratio test. Similar question: link
Dec
11
comment Polynomial With Imaginary Roots
You are in the right track. The complex roots always come as conjugated. Thus the equation will actually have 4 roots. Then you can rewrite into $(x-a)(x-b)(x-c)(x-d)=0$ form, and you will have your answer.
Dec
10
answered Proving that $\sum_{k=0}^{\infty}\frac{1}{(k+1)(2k+1)(4k+1)}=\frac{\pi}{3}$
Dec
10
awarded  Teacher