Results 1 to 3 of 3

Math Help - Finding integral:

  1. #1
    Newbie
    Joined
    Feb 2011
    Posts
    13

    Finding integral:

    1/(xlnx)

    Step by step if you can please.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Prove It's Avatar
    Joined
    Aug 2008
    Posts
    11,319
    Thanks
    1241
    \displaystyle \int{\frac{1}{x\ln{x}}\,dx} = \int{\frac{1}{\ln{x}}\,\frac{1}{x}\,dx}.

    Now make the substitution \displaystyle u =\ln{x} \implies \frac{du}{dx} = \frac{1}{x}.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Super Member
    Joined
    Mar 2010
    Posts
    715
    Thanks
    2
    Hint: \displaystyle \int\frac{1}{x\ln{x}} \;{dx} = \int\frac{(\ln{x})'}{\ln{x}}\;{dx}.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Finding the Integral
    Posted in the Calculus Forum
    Replies: 3
    Last Post: August 11th 2010, 03:47 PM
  2. Finding the Integral of sin(x)*cos(x)
    Posted in the Calculus Forum
    Replies: 2
    Last Post: December 29th 2009, 05:34 AM
  3. finding the integral
    Posted in the Calculus Forum
    Replies: 1
    Last Post: October 25th 2009, 04:27 PM
  4. Need help with finding Integral
    Posted in the Calculus Forum
    Replies: 3
    Last Post: January 22nd 2009, 12:39 PM
  5. finding the integral
    Posted in the Calculus Forum
    Replies: 4
    Last Post: December 27th 2007, 10:47 AM

Search Tags


/mathhelpforum @mathhelpforum