- #1
KostasV
- 21
- 0
Homework Statement
The problem statement can be seen in the picture i uploaded.
Homework Equations
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The Attempt at a Solution
The attempt to the solution can be seen in the picture i uploaded.
I reached to the A and i don't know how to proceed to the solution that is given below. How does the minus and δkj disappear?
If i do the double summation on k and j I think that every term gets zero either because of εijk (levi-cevita) or δkj (kronecker)