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Derive equation with a multiplier and constant

  1. Oct 26, 2013 #1
    Hi there,

    I'm trying to derive the following equation, but despite internet searching haven't been able to figure out what to do with the multiplier, D.

    D * dθ/dz + k = C

    I need to derive the equation and then plot the graph θ(y-axis) against z (x-axis).

    Any help greatly appreciated,
    thank you.
     
  2. jcsd
  3. Oct 26, 2013 #2

    vanhees71

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    Deriving from what? It helps a lot to clearly state the problem not only to be able to get help from others but also to solve the problem yourself!
     
  4. Oct 26, 2013 #3

    UltrafastPED

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    Derive the equation from what? Is it from raw data, or from a description of a property of something?

    You would do better to look through your assignment and class notes rather than the internet! Or form a study group.
     
  5. Oct 29, 2013 #4

    HallsofIvy

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    If by "derive the equation" you mean solve that equation for [itex]\theta[/itex] as a function of z just solve for [itex]d\theta= [(C- k)/D]dz[/itex]. If C, k, and D are constants that gives [itex]\theta= [(C- k)/D]z+ E[/itex] where E is a "constant of integration".
     
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