Results 1 to 5 of 5

Math Help - riemann sums

  1. #1
    Member
    Joined
    Oct 2008
    Posts
    87

    riemann sums

    Calculate each of the following approximations for .
    LEFT(2) = got this
    RIGHT(2) =
    TRAP(2) = got this
    MID(2) = got this

    I cant seem to figure out the right one
    Follow Math Help Forum on Facebook and Google+

  2. #2
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by amiv4 View Post
    Calculate each of the following approximations for .
    LEFT(2) = got this
    RIGHT(2) =
    TRAP(2) = got this
    MID(2) = got this

    I cant seem to figure out the right one
    if you got the left one, why is the right one that much different. by the way the 2 means you made 2 subintervals right? so you have 2 rectangles.

    so you let x_0 = 0, ~x_1 = 2, \text{ and } x_2 = 4

    for the LEFT(2) you chose the height of your two rectangles to be f(x_0) and f(x_1), where f(x) = \frac {-5}{(x + 1)^3}

    so for the RIGHT(2), do pretty much the same thing, except choose f(x_1) and f(x_2) for the height of your rectangles.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member
    Joined
    Oct 2008
    Posts
    87
    i did that and got 2(-.18159-.04)
    but for some reason it says that aint right
    Follow Math Help Forum on Facebook and Google+

  4. #4
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by amiv4 View Post
    i did that and got 2(-.18159-.04)
    but for some reason it says that aint right
    of course that isn't right. -0.18159 is not f(2)
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Member
    Joined
    Oct 2008
    Posts
    87
    oh shoot i switched two numbers
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Riemann Sums
    Posted in the Calculus Forum
    Replies: 7
    Last Post: September 4th 2010, 03:14 PM
  2. Riemann Sums....
    Posted in the Calculus Forum
    Replies: 1
    Last Post: November 20th 2009, 02:40 AM
  3. Riemann Sums
    Posted in the Calculus Forum
    Replies: 1
    Last Post: May 12th 2008, 11:59 PM
  4. Riemann Sums
    Posted in the Calculus Forum
    Replies: 4
    Last Post: April 10th 2008, 12:00 PM
  5. Riemann Sums and Riemann Integrals
    Posted in the Calculus Forum
    Replies: 1
    Last Post: October 1st 2006, 01:08 PM

Search Tags


/mathhelpforum @mathhelpforum