Question Number 84561 by M±th+et£s last updated on 14/Mar/20
$$\int_{\mathrm{0}} ^{\infty} \int_{\mathrm{0}} ^{\infty} \frac{{cos}\left({x}−{y}\right)−{cos}\left({x}\right)}{{xy}}{dx}\:{dy} \\ $$
Answered by mind is power last updated on 16/Mar/20
$$\int\int\frac{{cos}\left({x}−{y}\right)−{cos}\left({x}+{y}\right)}{{xy}}{dxdy}? \\ $$