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Homework Help: Multivariable Calculus: Directional Derivatives, Differentiablity, Chain Rule

  1. Apr 24, 2012 #1
    Last edited: Apr 24, 2012
  2. jcsd
  3. Apr 24, 2012 #2

    Ray Vickson

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    Science Advisor
    Homework Helper

    Just use the equations you have written down, or explain why you are unable to use them.

  4. Apr 25, 2012 #3


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    Staff: Mentor

    It is against the PF rules to delete your OP after you have received help. Check your PMs.
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