Copied Evaluate the integral \[ I=\int _0^\infty \frac {\cos ax}{(x+1)^2}\,dx. \] Raw LaTeX Evaluate the integral \[ I=\int_0^\infty \frac{\cos ax}{(x+1)^2}\,dx. \] Topic Tags Cauchy Integral Formula and Integral Theorems Harmonic Functions and Poisson Integral Formula Linear Programming and Optimization Real Integral Evaluation by Complex Methods