trying evaluate double integral on infinite support. like
quad2d(f, 0, inf, 0, inf)
but quad2d requires finite boundaries. know if there exists alternative functions deals infinite? 1 variable quadgk that.
you use symbolic equations solver, instead of numeric one.
since not possible in case (as stated in comment),
approximate infinity series of integrals 0 m, each item in series m larger previous item. continue increasing m until change in result smaller goal error epsilon.
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