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!
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...
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...