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Derivative of a fraction and power

  1. Dec 15, 2014 #1
    I'm trying to take the derivative of [x/x^2+1]^3. Where do I start?
     
  2. jcsd
  3. Dec 15, 2014 #2
    Start as how you start to any derivative, difference quotient.
     
  4. Dec 15, 2014 #3
    as I interpret
    $$(\frac{x}{x^2}+1)^3$$

    start with the chain rule with power rule , then quotient and difference rule .
     
  5. Dec 15, 2014 #4

    mathman

    User Avatar
    Science Advisor
    Gold Member

    Start by clarifying your expression.
    [itex](\frac{x}{x^2+1})^3[/itex] or [itex](\frac{1}{x}+1)^3[/itex]?
     
  6. Dec 15, 2014 #5
    Thanks! That really helped.
     
  7. Dec 15, 2014 #6

    Mark44

    Staff: Mentor

    In the future, post questions like this in the Homework & Coursework section (under Calculus), not here in the technical sections. When you post a question in the Homework section, a template appears into which you enter the problem description, any formulas or equations, and what you have tried.
     
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