10.7.29 Calculating Integrals of a Real Variable Usidues

Condition: Calculate the integral using deductions: \ [\ int _ {-\ infty}^{\ infty} \ frac {\ cos 3 x d x} {^left (x {2} +4 \ right)^{2} \]]

Here You Can Find Calculations of Proper and Improper Integrals of a Real Variable Usidues, USing Various Techniques.