Results 1 to 6 of 6

Math Help - integration problem

  1. #1
    Newbie
    Joined
    Aug 2009
    Posts
    3

    integration problem

    can anyone help me with this, it's been bothering me for the last few days

    \int\sqrt{1+\sin^2 x}dx

    i've tried doing substitution but with little success, and i don't think partial integration does the trick
    Last edited by sma4; August 1st 2009 at 06:27 PM.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,700
    Thanks
    454
    Quote Originally Posted by sma4 View Post
    can anyone help me with this, it's been bothering me for the last few days

    \int\sqrt{1+\sin^2 x}dx

    i've tried doing substitution but with little success, and i don't think partial integration does the trick
    I believe this elliptical integral cannot be integrated using elementary methods.

    I don't have the background to explain ... maybe someone more knowledgeable will comment.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Flow Master
    mr fantastic's Avatar
    Joined
    Dec 2007
    From
    Zeitgeist
    Posts
    16,948
    Thanks
    5
    Quote Originally Posted by sma4 View Post
    can anyone help me with this, it's been bothering me for the last few days

    \int\sqrt{1+\sin^2 x}dx

    i've tried doing substitution but with little success, and i don't think partial integration does the trick
    The integral cannot be found using a finite number of elementary functions. What is the exact problem that has led you to this integral?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Newbie
    Joined
    Aug 2009
    Posts
    3
    Quote Originally Posted by mr fantastic View Post
    What is the exact problem that has led you to this integral?
    I don't understand what you are asking for. I found this problem in my exercise book. The original question is as i wrote above, with no additional details. Is it missing something?
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Flow Master
    mr fantastic's Avatar
    Joined
    Dec 2007
    From
    Zeitgeist
    Posts
    16,948
    Thanks
    5
    Quote Originally Posted by sma4 View Post
    I don't understand what you are asking for. I found this problem in my exercise book. The original question is as i wrote above, with no additional details. Is it missing something?
    I assumed that you probably incorrectly obtained this integral from the real problem. Clearly that's not the case. Does your book expect you to solve it using elliptic functions? If not, then yes, it's probably either missing something or there's a typographical error.
    Follow Math Help Forum on Facebook and Google+

  6. #6
    Newbie
    Joined
    Aug 2009
    Posts
    3
    Quote Originally Posted by mr fantastic View Post
    Does your book expect you to solve it using elliptic functions? If not, then yes, it's probably either missing something or there's a typographical error.
    The book doesn't expect nor have I learnt elliptical integrals since i am still a high school student. I will ask my teacher for further clarifications, maybe I'm missing the details. Thank you for your time.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Integration problem
    Posted in the Calculus Forum
    Replies: 2
    Last Post: December 4th 2010, 09:35 PM
  2. Integration Problem
    Posted in the Calculus Forum
    Replies: 6
    Last Post: March 16th 2010, 04:20 PM
  3. Replies: 2
    Last Post: February 19th 2010, 10:55 AM
  4. Integration problem?
    Posted in the Calculus Forum
    Replies: 6
    Last Post: June 3rd 2009, 06:33 PM
  5. Integration problem
    Posted in the Calculus Forum
    Replies: 2
    Last Post: June 2nd 2008, 02:19 AM

Search Tags


/mathhelpforum @mathhelpforum