Having heaps of trouble with v.identities any help possible would be greatly appreciated.

LetF= (z,y,-x) and f = |F| <--- (magnitude F)

Use vector identities to calculate;

$\displaystyle

\nabla \cdot (f \nabla \times (f F))

$

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- Apr 12th 2009, 05:36 PMmonsterVector Identities!
Having heaps of trouble with v.identities any help possible would be greatly appreciated.

Let**F**= (z,y,-x) and f = |F| <--- (magnitude F)

Use vector identities to calculate;

$\displaystyle

\nabla \cdot (f \nabla \times (f F))

$ - Apr 13th 2009, 09:56 PMmonsterVector Identities!!
I was going to use the following identity on the part inside brackets;

$\displaystyle

\nabla \cdot (F \times G) = G \cdot ( \nabla \times F) - F\cdot ( \nabla \times G)

$

where $\displaystyle F= f \nabla$ and $\displaystyle G= f F$

but am not sure this is right move and wher to go from there??

cheers