- #1

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## Homework Statement

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

## Homework Equations

## The Attempt at a Solution

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

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- Thread starter Kolahal Bhattacharya
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- #1

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

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

- #2

Dick

Science Advisor

Homework Helper

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Is 'X' supposed to mean a cross product between the normal vector and the gradient?

- #3

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yes.It means that.

- #4

Dick

Science Advisor

Homework Helper

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Try using [tex]\int_S n \times a dS = \int_V curl(a) dV[/tex].

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