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- Thread starter M. next
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Thank you.

- #2

tiny-tim

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Is the grad([itex]\frac{\partial f}{\partial t}[/itex]) the same as [itex]\frac{\partial}{\partial t}[/itex](gradf)?

Unless f is really weird, yes.

(it's the same test as whether ∂^{2}f/∂x∂t = ∂^{2}f/∂t∂x …

i forget the exact conditions)

i forget the exact conditions)

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