Recent content by spyke2050

it's one computer program should all those computations.

really? it's kind of surprising. but ok, i'll try to do so then. thanks

well the thing is that it should be computed from thousands to millions times. so matematica isn't the solution i hoped for. ok guys thank you for help best regards

that solution was my first choice. but it's too messy and computationally costly. but thakns anyway

I need analitical solution for that integral. Not just numerical evaluation of that integral. I got some solutions. But the thing is that those solutions are absolutely impractical for numerical computation.

ok, let me restate a problem a bit: \int...\intexp(\sum_{i,j,k}A_{i,j,k}x_{i}x_{j}x_{k})dx_{i}dx_{j}dx_{k} what whould be the solution to above definite integral? solution is not required to be exact. i would be appreciated for any hints for solution. i went through a few already but...

so the question is how to solve the next: ∫...∫exp(-(a+b*x1+c*x1*x4+d*x3*x4+f*x2*x3*x4)^2)dx1dx2dx3dx4 a,b,c,d,f - real constants; x1,x2,x3,x4 - real variables; borders of integration are finite, let say for x1 it is [x1a,x1b] and so on for the rest of them; i'v tried to solve it in...