Recent content by bothcats

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    Proving Vector Calculus Identities: Tips and Tricks

    Sorry for the confusion. I'll be more careful with the lettering in the future. I've actually figured this one out now. It was the product rule that I wasn't sure about, now that I've worked it through (and several other identity proofs). Now, I'm on the divergence of (u cross v) identity. Thanks!
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    Help with Index Notation: εlmn detA = εijkAilAjmAkn

    Homework Statement Show: εlmn detA = εijkAilAjmAkn Homework Equations not sure The Attempt at a Solution I'm really not sure where to begin. I understand index notation (at least I think I do). Can anyone help me get started? I think that once I have the first step, I'll be...
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    Proving Vector Calculus Identities: Tips and Tricks

    Homework Statement div(øu) = ødivu + ugradø Homework Equations divergence of scalar field = f,ii divergence of vector field = ui,i The Attempt at a Solution I've heard this is a simple proof, but this is my first one of 8 or so proofs I need to complete for homework, and I'm...