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Sep
15
comment Is there a closed form solution for this differential equation?
@MhenniBenghorbal: Thanks for the comment. Could you give me some guideline as to how to go about approximating ODEs?
Sep
15
comment Is there a closed form solution for this differential equation?
The main confusion being exp integral is defined as a definite intgeral and we have indefinite integrals in our equations.
Sep
15
comment Is there a closed form solution for this differential equation?
Thanks @Chinny. There is a typo which gets repeated - $k_2t$ in place of $k_3 t$ in the exponent. Also I do not understand how you used the def. of exp. integral. Could you pl. correct and elaborate? Thanks :)
Sep
15
comment How to solve integrals of the form $\int u^{-\alpha} e^{-\beta u} du$?
Hi @ClaudeLeibovici: My main ques. is how we can move from an indefinite integral to a definite integral, as is the case in the definition for $E_\alpha$.
Sep
15
revised How to solve integrals of the form $\int u^{-\alpha} e^{-\beta u} du$?
edited title
Sep
15
comment How to solve integrals of the form $\int u^{-\alpha} e^{-\beta u} du$?
@ClaudeLeibovici: No, from the Wiki defn, I do not see how you arrive at the transformation from gamma to exp.
Sep
15
comment How to solve integrals of the form $\int u^{-\alpha} e^{-\beta u} du$?
@ClaudeLeibovici: Can you give me the defn. of $E_{-\alpha}$? Is it the exponential integral?
Sep
15
revised How to solve integrals of the form $\int u^{-\alpha} e^{-\beta u} du$?
added 47 characters in body; edited title
Sep
15
asked How to solve integrals of the form $\int u^{-\alpha} e^{-\beta u} du$?
Sep
11
asked Is there a closed form solution for this differential equation?
Jul
2
awarded  Curious
Jun
15
accepted Calculating expectation conditioned on a sigma algebra
May
5
awarded  Excavator
May
4
revised Example where union of increasing sigma algebras is not a sigma algebra
made title precise.
May
4
comment Example where union of increasing sigma algebras is not a sigma algebra
Related: math.stackexchange.com/questions/26888/…
May
4
suggested approved edit on Example where union of increasing sigma algebras is not a sigma algebra
May
3
accepted Expressing power set of rationals
May
3
asked Expressing power set of rationals
May
1
comment Calculating expectation conditioned on a sigma algebra
Thanks Did. While I understand this, my thinking gets muddled when it comes to looking at sets and sigma algebras. Could you please help me out?
May
1
comment Calculating expectation conditioned on a sigma algebra
Hmmm, so is it $\sigma(Y)=\sigma(\{\phi,\Omega,\mathcal{B}{\{\omega\ge k\}},\mathcal{B}{\{\omega\le k\}}\})$? I am confused here...