let be the integral:(adsbygoogle = window.adsbygoogle || []).push({});

[tex] \int_{c-i\infty}^{c+i\infty}\int_0^ag(xy)ydxdy [/tex]

then i make the substitution xy=u y=v then what would be the new limits of integration? (the y are the same than v but what would happen with the u?)

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# Rare integral.

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