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Homework Help: Related Rate Problem HeLp!

  1. Jun 29, 2008 #1
    Related Rate Problem....HeLp!

    1. The problem statement, all variables and given/known data
    The ph of a solution is 3, ph changes at a rate of 0.01 at time t and the concentration of H3O is 10^-ph. At what rate is concentration decreasing at time t.

    2. Relevant equations

    3. The attempt at a solution
    I need someone to walk me through this if possible..I've never done a related rate question (or if I did I don't remember).
  2. jcsd
  3. Jun 29, 2008 #2


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    Re: Related Rate Problem....HeLp!

    First things first.

    Let's say you have a function y(x) and x itself is a function of time x(t). So we have y(x(t)).

    If you are given dx/dt, can you write down the expression for dy/dt in terms of dx/dt? (it's basically the chain rule). If you know this, the rest will be straightforward.
    Last edited: Jun 29, 2008
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