I am in a plane to the google mentors summit, I'll reply in a day or two when I get a decent net connection. Ondrej
On 10/22/08, Pekeika <[EMAIL PROTECTED]> wrote: > > Ondrej, Many thanks for your answer! > > Yes I need to do a definite integral but I noticed that the exp(poly) > integration is not yet implemented in Sympy and yes I need to > implement it, but I'm an engineer not a mathematician, I would > appreciate your help very much... my function that I need to integrate > is a lot more complex, it is the product of likelihood functions that > have all exponential shape, and the lambda parameter of these > exponentials is a Gaussian expression each... In that Gaussian are 4 > parameters which are my integration space (I need to do partial, > definite integration respect to each of them). > > It looks like the following: > > Integral{[lambda1*exp(-lambda1*c1)]*[lambda2*exp(- > lambda2*c2)]*...*[lambdan*exp(-lambdan*c3)]} dv d(phi) dg dD > > in which ci, xi, yi and ti are constants, and each lambda is 1/ > Gaussian, with parameters v, phi, g and D: > > lambdai=1/{(g/(4.00*pi*D*ti))*(exp(((-(xi-(v*ti*cos(phi)))**2.00)+(- > (yi-(v*ti*sin(phi)))**2.00))/(4.00*D*t)))} > > Everything is integrating but the exp() parts are not... could you > please acommodate the patch in the link provided to try solve this? or > please give me hints to try myself... > > Thanks!! > Pekeika. > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sympy?hl=en -~----------~----~----~----~------~----~------~--~---