Need help with erf function please

1. Apr 3, 2009

rpand4

I have this question that I have been stuck on for quite sometime. If someone could assist me in solving it then that would be great. Can someone please shed some light?

I have attached the question in a document.

Thankyou

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2. Apr 4, 2009

Tom Mattson

Staff Emeritus
What have you tried to do on this problem?

3. Apr 4, 2009

jambaugh

To get started insert the integral definition of the error function into the integral you are doing. View this as a double integral over an area in u,x space. Then look at different ways to evaluate this double integral.