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Homework Help: Eliminate arbitrary constant

  1. Jun 26, 2010 #1
    I would like to eliminate the arbitrary constant in this equation:

    2. x^3-3x^2y=C

    3. I tried differentiating with respect to x:

    This is where i dunno what I will do next. I dunno know what the result of differentiating C with respect to x. I assumed it is zero but I don't know if its right. Pls help me thanks
  2. jcsd
  3. Jun 26, 2010 #2


    Staff: Mentor

    Why? What exactly is the problem you're trying to solve? Differentiating with respect to x (which you attempted below) will get rid of the constant, but so what?
    When you differentiate -3x2y, you need to use the product rule. y is not a constant
    Since C is a constant, its derivative is zero.
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