Quick Vector Field question

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June 4th 2010, 11:59 PM
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!
June 5th 2010, 07:39 AM
Danny

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.
June 5th 2010, 12:05 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.

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