- #1
ChrisVer
Gold Member
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Homework Statement
I'm trying to calculate the integral:
[itex]S= \int (d^{N}x) exp(x_{i} A_{ij} x_{j}) = (\frac{\pi^{N}}{detA})^{\frac{1}{2}}[/itex]
where the integration is done over (-∞,+∞) , and [itex]A_{ij}=A_{ji}[/itex] (symmetric NxN matrix)
Homework Equations
The Attempt at a Solution
I am not sure how am I supposed to start calculating... Please don't give explicit answer, just a starting hint??