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Homework Help: Plz do reply(VECTORS related problem)

  1. Mar 3, 2005 #1
    Plz plz plz do reply(VECTORS related problem)

    Hi.,
    Well can u help me inthis problem.Bcoz after one day i am having a Physics test so plz do reply .

    Q: prove the following

    1) d/du(A+B)=d/du(A) +d/du(B)

    2) d/du(cA)=d/du c(A) +c d/du(A)

    3) d/du(A.B)=d/du(A).B +A. d/du(B)

    Q: prove the vector identity

    A x (B x C)=B(A.C)-C(A.B)
     
  2. jcsd
  3. Mar 3, 2005 #2

    arildno

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