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Homework Help: Natural log fxn = negative integral?

  1. Nov 23, 2009 #1
    1. The problem statement, all variables and given/known data
    True or false?

    ln(1/10) = -[tex]\int[/tex] dx/x

    3. The attempt at a solution

    I have no idea where to start on this one.

    what is dx/x ??
  2. jcsd
  3. Nov 23, 2009 #2
    right side means that u are supposed to integrate with respect to x

    -Integrate[1/x] with respect to x
  4. Nov 23, 2009 #3


    Staff: Mentor

    This is obviously not true as posted. Are there limits of integration that we're not seeing?
    I.e., does the integral look like this?
    [tex]-\int_1^{10} \frac{dx}{x}[/tex]
  5. Dec 18, 2009 #4
    ok I get it. the limits are missing, it must be a typo, but otherwise this makes sense to me now thanks
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