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Math Help - LinAlg - parallel and orthogonal vectors?

  1. #1
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    LinAlg - parallel and orthogonal vectors?

    u=(-11,-4,-11)
    v=(12,6,8)

    vector u1 is parallel to v
    vector u2 is orthogonal to v
    u1+u2=u

    find u1 and u2.

    i have absolutely no idea!!
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  2. #2
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    Quote Originally Posted by eiktmywib View Post
    u=(-11,-4,-11) & v=(12,6,8)
    vector u1 is parallel to v
    vector u2 is orthogonal to v
    u1+u2=u
    Standare vector projection.
    u_1  = \frac{{u \cdot v}}{{v \cdot v}}v\,\& \,u_2  = u - u_1
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