Question Number 136333 by Bird last updated on 20/Mar/21
$${calculate}\:\int_{\mathrm{0}} ^{\infty} \:\frac{{t}^{{a}} }{\mathrm{1}+{t}+{t}^{\mathrm{2}} }{dt} \\ $$$${study}\:{first}\:{the}\:{convergence} \\ $$$$\left({a}\:{real}\right) \\ $$
calculate-0-t-a-1-t-t-2-dt-study-first-the-convergence-a-real-