10.7.31 Calculating Integrals of a Real Variable Usidues
Condition: Calculate the integral. \ [\ int _ {-\ infty}^{\ infty} \ frac {d x} {\ left (x^{2} +1 \ right)^{2} \ left (x^{2} +81 \ right)} \] \]
Here You Can Find Calculations of Proper and Improper Integrals of a Real Variable Usidues, USing Various Techniques.