Jordan's lemma shows the value of the Integral
(1) |
(2) |
To derive the lemma, write
(3) | |||
(4) |
(5) |
(6) |
(7) |
(8) |
(9) |
(10) |
See also Contour Integration
References
Arfken, G. Mathematical Methods for Physicists, 3rd ed. Orlando, FL: Academic Press, pp. 406-408, 1985.
© 1996-9 Eric W. Weisstein