(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

By applying Cauchy's theorem to a suitable contour, prove that the integral of cos(ax^{2}) = (pi/8a)^{1/2}

2. Relevant equations

Cauchy's integral formula:

http://en.wikipedia.org/wiki/Cauchy's_integral_formula

3. The attempt at a solution

I'm not sure where to go after what I've got scanned. I've tried a few other things, but I can't seem to get anywhere that looks like something I could solve.

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# Homework Help: Complex Integral Problem

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