Results 1 to 3 of 3

Math Help - Question: ln integration question

  1. #1
    Newbie
    Joined
    Feb 2010
    Posts
    3

    Question: ln integration question

    Hello.
    I don't know how to solve this problem.
    Please help me.
    <br />
\int \frac{3^{lnx}}{x}~dx<br /> <br />
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Master Of Puppets
    pickslides's Avatar
    Joined
    Sep 2008
    From
    Melbourne
    Posts
    5,236
    Thanks
    28
    make u = \ln(x) \implies \frac{du}{dx} = \frac{1}{x}
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,700
    Thanks
    454
    Quote Originally Posted by appplejack View Post
    Hello.
    I don't know how to solve this problem.
    Please help me.
    <br />
\int \frac{3^{lnx}}{x}~dx<br /> <br />
    substitution ...

    let u = \ln{x}
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 6
    Last Post: July 21st 2010, 06:20 PM
  2. Integration Question
    Posted in the Calculus Forum
    Replies: 1
    Last Post: January 14th 2010, 05:24 PM
  3. Integration Question
    Posted in the Algebra Forum
    Replies: 1
    Last Post: October 29th 2009, 03:59 PM
  4. integration question
    Posted in the Calculus Forum
    Replies: 4
    Last Post: March 15th 2008, 11:22 AM
  5. Integration question
    Posted in the Calculus Forum
    Replies: 3
    Last Post: October 11th 2007, 03:11 AM

Search Tags


/mathhelpforum @mathhelpforum