# Quick Vector Field question

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• Jun 5th 2010, 12:59 AM
Em Yeu Anh
Quick Vector Field question
Find the divergence of $F(x,y,z) = <0, e^{xy}cosz,ytan^{-1}(\frac{x}{z})>$.

I had:
$xe^{xy}cosz-\frac{yx}{z^2+x^2}$ which was marked wrong, would someone be able to point out what I need to fix? Thanks a lot!
• Jun 5th 2010, 08:39 AM
Jester
Quote:

Originally Posted by Em Yeu Anh
Find the divergence of $F(x,y,z) = <0, e^{xy}cosz,ytan^{-1}(\frac{x}{z})>$.

I had:
$xe^{xy}cosz-\frac{yx}{z^2+x^2}$ which was marked wrong, would someone be able to point out what I need to fix? Thanks a lot!

I don't see a problem with it.
• Jun 5th 2010, 01:05 PM
Ackbeet
Concur with Danny, although, as a matter of notation, I prefer parentheses around all function arguments, to make everything crystal clear. Just my preference.