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Prove that for any three vectors vec(a),...

Prove that for any three vectors `vec(a), vec(b)` and `vec(c), [vec(a) + vec(b) vec(b) + vec(c) vec(c) + vec(a)] = 2 [vec(a)vec(b)vec(c)]`

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Knowledge Check

  • For the non-zero vectors vec(a),vec(b) and vec(c ),vec(a)*(vec(b)xxvec(c ))=0 , if

    A
    `vec(b) bot vec(c )`
    B
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    D
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