can anyone explain the solution of Σ [ xi , (xi - xj) ] = Σ [xi , xj ] ( the constant movements)? | fedest.com

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can anyone explain the solution of Σ [ xi , (xi - xj) ] = Σ [xi , xj ] ( the constant movements)?

2007-07-10 13:21:02 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Physics

1 answers

Don't you mean prove the identity?
Distibute the LHS. Note that Σ [ xi , xi ] = 0

2007-07-14 11:16:48 · answer #1 · answered by Dr. R 7 · 0⤊ 0⤋

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