Evaluate the following integral by use of Residues:

,

where cosh*z* is the hyperbolic cosine.

,

where cosh

[AdvMQuiz - Residue L1 - #1/5]

- Use only numerical values. For negative values, - sign is accepted as in -3.
- For fractions, do not use the decimal-point notation. Instead, use the slash ('/') as in 3/4.