Use residues toe evaluate the improper integral
[FONT=Helvetica]Use residues toe evaluate the improper integral
[FONT=Helvetica][FONT=serif][FONT=MathJax_Main][FONT=MathJax_Main]
$$\int_{0}^{\infty} \dfrac{dx}{(x^2 +9)^3}.$$
[FONT=Helvetica]Explain all steps including convergence. No need to...