Results 1 to 2 of 2

Thread: Integration: calc2

  1. April 9th 2008, 10:18 PM #1
    amaya
    amaya is offline
    Newbie
    Joined
    Jan 2008
    Posts
    17

    Red face Integration: calc2

    Can anyone help me solve: the integral from 5 to infinity of: 7/((n^2)-16)

    If you can just solve the integral that would be great! I can do the limit to infinity from there....I am having a lot of trouble with this one.

    Thank you!!
    Follow Math Help Forum on Facebook and Google+
  2. April 9th 2008, 11:14 PM #2
    o_O
    o_O is offline
    Primero Espada
    o_O's Avatar
    Joined
    Mar 2008
    From
    Canada
    Posts
    1,407
    \int_{5}^{\infty} \frac{7}{n^{2} -16} dn = \int_{5}^{\infty} \frac{7}{(n-4)(n+4)} dn

    The trick is to split the expression into partial fractions, i.e.

    \frac{7}{(n-4)(n+4)} = \frac{A}{n-4} + \frac{B}{n + 4}

    Solve for A and B and the integral should be easier to evaluate.
    Follow Math Help Forum on Facebook and Google+
« Calculating Angle From Two Points in 3d Space | Differential equation »

Similar Math Help Forum Discussions

  1. Calc2: Not sure where to begin...
    Posted in the Calculus Forum
    Replies: 5
    Last Post: November 30th 2010, 06:14 AM
  2. [SOLVED] Calc2...Finding the volume
    Posted in the Calculus Forum
    Replies: 2
    Last Post: July 11th 2010, 11:30 AM
  3. Calc2 - Dx with ln
    Posted in the Calculus Forum
    Replies: 3
    Last Post: January 22nd 2009, 02:46 PM
  4. [SOLVED] calc2 major help please!
    Posted in the Calculus Forum
    Replies: 9
    Last Post: September 30th 2008, 06:45 PM
  5. [SOLVED] calc2 problem
    Posted in the Calculus Forum
    Replies: 1
    Last Post: November 19th 2006, 07:28 PM

Search Tags


/mathhelpforum @mathhelpforum