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Homework Help: Integrating (2x^2+1)/x dx

  1. Aug 31, 2010 #1
    1. The problem statement, all variables and given/known data

    I haven't done much math for years.

    just a little reminder would be very appreciated.

    when you take integral for (2x^2+1)/x dx

    I believe this can break down into integral 2x dx + integral 1/x dx

    What I wondered about was is this summation of those two as written above

    or the subtraction (integral 2x dx - integral 1/x dx)

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Aug 31, 2010 #2


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    Gold Member

    You have it right. The integral can be split into two integrals like you have.
  4. Sep 1, 2010 #3


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    Science Advisor

    [tex]\frac{2x^2+ 1}{x}= \frac{2x^2}{x}+ \frac{1}{x}= 2x+ \frac{1}{x}[/tex]

    Why would you even consider changing the "+" to "-"?
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