- #1

Niles

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## Homework Statement

Hi all.

Please take a look at:

http://books.google.com/books?id=9p...ts=peoLUp4z_M&sig=vaRVDMazSj10x0k4v4iGKCHni0o

What do they mean by that hint?

## The Attempt at a Solution

First I want to find the divergence of the three vectors.

Second, for the vectors which have a divergence equal to zero, I want to find the vector A so the rotation of A = B. But this is the part I am in doubt about - can you help?

Niles.