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Topic: Can someone solve this improper integral?
Replies: 19   Last Post: Jul 6, 2014 6:30 PM

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paulandrewbird@gmail.com

Posts: 12
Registered: 6/30/14
Can someone solve this improper integral?
Posted: Jun 30, 2014 2:01 PM
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Hi, I'm trying to solve the integral:

integral( exp( a*x^4+4*b*x^3*y+6*c*x^2*y^2+4*d*x*y^3+e*y^4) ,x=-infty..infty, y=-infty..finty)

I tried on Wolfram alpha but it was too complicated for it.

I'm guessing it's going to be in the form 1/P(a,b,c,d,e)^(1/8) where P is a 4th degree polynomial in the coefficients of the quartic.

My guess is that P is the discriminant of the polynomial but that is just a guess.

Is there any good free software that can solve this? Can Mathematica or Maple solve this? Can you?

Thanks.


Date Subject Author
6/30/14
Read Can someone solve this improper integral?
paulandrewbird@gmail.com
6/30/14
Read Re: Can someone solve this improper integral?
Axel Vogt
6/30/14
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paulandrewbird@gmail.com
6/30/14
Read Re: Can someone solve this improper integral?
paulandrewbird@gmail.com
6/30/14
Read Re: Can someone solve this improper integral?
Christopher J. Henrich
7/2/14
Read Re: Can someone solve this improper integral?
paulandrewbird@gmail.com
7/1/14
Read Re: Can someone solve this improper integral?
clicliclic@freenet.de
7/2/14
Read Re: Can someone solve this improper integral?
paulandrewbird@gmail.com
7/2/14
Read Re: Can someone solve this improper integral?
paulandrewbird@gmail.com
7/2/14
Read Re: Can someone solve this improper integral?
paulandrewbird@gmail.com
7/2/14
Read Re: Can someone solve this improper integral?
clicliclic@freenet.de
7/2/14
Read Re: Can someone solve this improper integral?
paulandrewbird@gmail.com
7/2/14
Read Re: Can someone solve this improper integral?
paulandrewbird@gmail.com
7/2/14
Read Re: Can someone solve this improper integral?
paulandrewbird@gmail.com
7/1/14
Read Re: Can someone solve this improper integral?
Axel Vogt
7/2/14
Read Re: Can someone solve this improper integral?
paulandrewbird@gmail.com
7/2/14
Read Re: Can someone solve this improper integral?
Axel Vogt
7/2/14
Read Re: Can someone solve this improper integral?
Axel Vogt
7/2/14
Read Re: Can someone solve this improper integral?
paulandrewbird@gmail.com
7/6/14
Read Re: Can someone solve this improper integral?
Herman Rubin

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