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Homework Help: Maple TA - What is this asking?

  1. Mar 16, 2010 #1
    1. The problem statement, all variables and given/known data

    http://img267.imageshack.us/img267/5496/16943970.jpg [Broken]

    Could anybody here tell me what this question is asking?

    I have tried differentiating with respect to y and keeping x and z constant but i got the asnwer wrong. The topic of this assignment is 'review of differentiaion' so im assuming its something to do with differentiation.

    If any body is familiar with maple TA, is it a glitch or something?

    What does f subscript zx mean?

    thanks in advance
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Mar 16, 2010 #2
    dont be affraid to answer
  4. Mar 16, 2010 #3
    Partial derivative
  5. Mar 16, 2010 #4
    Thank you SO MUCH for the overwhelming response, I managed to filter through all the replies and found a lot of correct answer telling me that i had to:

    differentiate with respect to x and then again with z.

    again thank you so much
  6. Mar 16, 2010 #5


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    Actually, fzx means differentiate first with respect to z, then respect to x. Of course, the answers are the same if you have continuity of the second partials. Using the other notation you have

    [tex]f_{zx} = \frac {\partial^2}{\partial x \partial z}f[/tex]

    so, unfortunately, the two notations are reversed from each other.
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