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location Kathmandu, Nepal
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visits member for 3 years, 6 months
seen 6 hours ago

experimentX

I am embarrassed, probably I should just die!!


8h
comment Turning a summation into an integral
hi ... try LaTeX
17h
awarded  calculus
23h
revised Spectrum of a Rectangular signal?
edited tags
23h
comment What is 2 choose2?
There you go
23h
comment What is 2 choose2?
no ... just leave it as it is. I think there is a nice video on youtube explaining it.
23h
comment What is 2 choose2?
$0!=1{{{{{}}}}}$
23h
revised What is 2 choose2?
added 3 characters in body
23h
comment Infinite double potential well
use the continuity of the functions and their derivative at boundary of each region .... i.e. $\psi_1(a) = \psi_2(a)$ and $\psi_1'(a) = \psi_2'(a)$ and get rid of the constant like A, B, ... as much as possible. normalize it later ... by setting the integral from $-(a+b) \to (a+b)$. Ugh ... looks like awful lot of work to me.
23h
comment Infinite double potential well
does method of pertubation work??
23h
revised $y''+2y'+5y=0$, initial value problem with Laplace transform?
edited title
1d
revised Explain how the following is equal to $2\cos x$.
added 3 characters in body
1d
comment Calculating a double integral
@LukaHorvat sorry, I had made error on inputing on wolf. From the looks of output, I don't think there is any symmetry involved. And there is no escape from $\int x^2 \sin(x) dx $. lol ... I myself don't feel like evaluating that integral :(
1d
revised Calculating a double integral
added 26 characters in body
1d
comment Calculating a double integral
@LukaHorvat Use Integration by Parts, ... twice for inner integral.
1d
comment Calculating a double integral
@LukaHorvat Huh?? do you mean that you have problem evaluating that integral?
1d
answered Calculating a double integral
1d
revised Calculating a double integral
latex fix
1d
revised Evaluating the improper integral $\int_0^{\infty} \frac{\sin x}{x+x^2} \ dx$
added 248 characters in body
1d
answered Evaluating the improper integral $\int_0^{\infty} \frac{\sin x}{x+x^2} \ dx$
1d
revised Show there exist an positive integer $N$ such that $|e^z|>|\sum_{r=N}^{\infty}\frac{z^r}{r!}|$
edited title