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Use index/Einstein notation to prove the following identity for two vectors u and 7. Hint: is the output of the right hand side a scalar,

Use index/Einstein notation to prove the following identity for two vectors u and 7. Hint: is the output of the right hand side a scalar, vector, or tensor? How many free indices are you expecting as a result? (Vxu) . U - ( Vxv) . u = V . (uxv) (1)

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