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    Gradients of vectors expressions

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    f = r.k/|r^3|

    What is the gradient of f?

    Show that for vectors v and r and constant vector a we get:
    if v=(a.r)r

    Div(v) = 4(a.r)
    Curl(v) = a x r

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    Solution Summary

    The gradients and vector expression functions are determined.