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Homework Help: Curl (A X B) value

  1. Mar 19, 2012 #1
    1. The problem statement, all variables and given/known data

    The problem is to find the value of Curl of A X B.

    I used the usual vector triple product formula to write as below.

    Δ X (A X B) = (Δ.B)A - (Δ.A)B = (div B)A - (divA)B

    2. Relevant equations

    But this is not the answer. Please suggest where i was wrong.

    3. The attempt at a solution
  2. jcsd
  3. Mar 19, 2012 #2

    Ray Vickson

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    Science Advisor
    Homework Helper

    Carry out the steps explicitly: [tex] [\nabla \times (A \times B)]_x =
    \frac{\partial}{\partial y} (A \times B)_z - \frac{\partial}{\partial z} (A \times B)_y, [/tex] etc.

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