Results 1 to 2 of 2

Thread: Ugly integral

  1. February 11th 2009, 07:26 AM #1
    desdemoniagirl
    desdemoniagirl is offline
    Newbie
    Joined
    Oct 2008
    Posts
    14

    Ugly integral

    Hello
    was wondering if someone could help me with this integral.
    Integral (Square root(arctanx))/(1+(x^2))
    I have no clue how to work with the arctanx, i know it is tan^-1(x)
    Thanks in advance for the help.
    Follow Math Help Forum on Facebook and Google+
  2. February 11th 2009, 07:29 AM #2
    red_dog
    red_dog is offline
    MHF Contributor red_dog's Avatar
    Joined
    Jun 2007
    From
    Medgidia, Romania
    Posts
    1,241
    \arctan x=t\Rightarrow\frac{1}{1+x^2}dx=dt

    Then I=\int\sqrt{t}dt=\frac{2}{3}t\sqrt{t}+C
    Follow Math Help Forum on Facebook and Google+
« find how many solutions this ln polynomial equation has.. | Double Integral Question »

Similar Math Help Forum Discussions

  1. Ugly Fourier Transform
    Posted in the Advanced Applied Math Forum
    Replies: 0
    Last Post: May 10th 2011, 05:37 AM
  2. I need help beautifying this big ugly expression
    Posted in the Algebra Forum
    Replies: 1
    Last Post: September 1st 2009, 11:30 PM
  3. Ugly IVP Involving Laplace Transforms
    Posted in the Differential Equations Forum
    Replies: 1
    Last Post: May 1st 2009, 07:35 AM
  4. [SOLVED] An ugly PP calc word problem
    Posted in the Calculus Forum
    Replies: 1
    Last Post: November 13th 2007, 12:33 AM
  5. Simplifying Ugly Radical Expressions from Cardano's Method
    Posted in the Advanced Math Topics Forum
    Replies: 2
    Last Post: July 31st 2007, 08:14 AM

Search Tags


/mathhelpforum @mathhelpforum