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

I am to show: closed integral {phi (grad phi)} X (n^)dS=0

2. Relevant equations

3. The attempt at a solution

I understand I am to use divergence theorem here.but cannot approach.Please help

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# Homework Help: Vector identity

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