Use Jordan’s Lemma (and describe how Jordan’s Lemma is used) to evaluate the integral \[ I=\int _0^\infty \frac {\cos ax}{x^2+1}\,dx. \]
Question
Math 6420 • PDE
Spring 2010 • Question 7
Question
Spring 2010 • Question 7
Use Jordan’s Lemma (and describe how Jordan’s Lemma is used) to evaluate the integral \[ I=\int _0^\infty \frac {\cos ax}{x^2+1}\,dx. \]