Results 1 to 3 of 3

Thread: Question: ln integration question

  1. February 17th 2010, 02:20 PM #1
    appplejack
    appplejack is offline
    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. February 17th 2010, 02:24 PM #2
    pickslides
    pickslides is offline
    Master Of Puppets
    pickslides's Avatar
    Joined
    Sep 2008
    From
    Melbourne
    Posts
    5,234
    Thanks
    26
    make u = \ln(x) \implies \frac{du}{dx} = \frac{1}{x}
    Follow Math Help Forum on Facebook and Google+
  3. February 17th 2010, 02:24 PM #3
    skeeter
    skeeter is offline
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,625
    Thanks
    425
    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+
« local max, min and saddle points | Rate of Change: Depth of Water in a Tank »

Similar Math Help Forum Discussions

  1. One differentiation question and one integration question.
    Posted in the Calculus Forum
    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