Question Number 67467 by ~ À ® @ 237 ~ last updated on 27/Aug/19
$$ \\ $$$$ \\ $$$${Find}\:\:\:\:{f}\left({x}\right)=\int_{\mathrm{0}} ^{\infty} \:\:\frac{\:{tlnt}}{\left(\mathrm{1}+{t}^{\mathrm{2}} \right)^{{x}} }\:{dt}\: \\ $$
Find-f-x-0-tlnt-1-t-2-x-dt-