580 reputation
211
bio website physics.stackexchange.com/…
location Spain
age 27
visits member for 2 years, 6 months
seen Apr 11 at 13:21

Undergraduate physics student at Spain, working at a Software Factory (BASH and Python Development)


Mar
21
comment Perfect correlation coefficient
Thanks! it gives exactly one as desired. You can post is as an answer, if you would
Mar
21
asked Perfect correlation coefficient
Dec
14
comment can an arbitrary set be.always embedded in other set?
It clearly says no specified, not don't asume any model.
Dec
14
revised can an arbitrary set be.always embedded in other set?
added 63 characters in body
Dec
14
asked can an arbitrary set be.always embedded in other set?
Sep
30
comment Poisson equation for Jaffe Distribution
I get $$ \frac{\partial \phi}{\partial r}=-\frac{GM}{r_{j}}\frac{1}{r^2(r+r_{J})}$$ but that integral is difficult
Sep
30
comment Poisson equation for Jaffe Distribution
@user8268 would you like to write it as an answer? You've been most helpful thanks.
Sep
29
comment Poisson equation for Jaffe Distribution
So $2r\phi'+r^2\phi''=r^2\rho$ and now I can try to solve the ode (and letting $\psi=\phi'$) is this what you mean?
Sep
29
comment Poisson equation for Jaffe Distribution
thanks again, I will write it down
Sep
29
revised Poisson equation for Jaffe Distribution
edited integral
Sep
29
comment Poisson equation for Jaffe Distribution
Thanks. As far as I understand have to show that the potential is that one, but I can't use the potential previously. The only data given in order to answer is the mass density distribution. I have the solution for the potential, but I can't use it.
Sep
29
asked Poisson equation for Jaffe Distribution
Sep
28
comment Incomplete gamma function
Thanks. Actually I was interested in an analytic formula, we're not going to do numerical work as fas as I know. I found that $$y^{8}\sum_{n=0}^{\infty}\frac{y^{n}}{(n+8)!}=e^{y}-\sum_{n=0}^{7}\frac{y^{n}}{‌​n!} $$
Sep
27
revised Incomplete gamma function
added 75 characters in body
Sep
27
asked Incomplete gamma function
Sep
25
awarded  Yearling
Jul
17
answered “Fixed $k$” in Mathematical Induction
Jul
11
revised How to simplify a sum with factorial?
k^2 instead of 2^k typo
Jul
11
suggested suggested edit on How to simplify a sum with factorial?
Jul
10
comment Infinite composition of functions
Thank you, that made it more clear. I accepted Gottfried's answer instead of yours because of the reference recommendations, however I'm very grateful for your answer and comments.