Results 1 to 2 of 2

Thread: Sum Function help

  1. #1
    Junior Member
    Sep 2007

    Sum Function help

    Hi im a bit stuck on this.

    I know the first term is 2, and i just have to cube it, but i was confused as i thought the 5 on the top means the sum up to the fifth term. If i do this, i get

    2^3 + 3^3 + 4^3 + 5^3 + 6^3

    Which equals 440. However i checked the answer and it said 224, which is basicly what i did but without the 6^3 at the end. Anyway i was just wondering if the answer book is right, or if im right because there have been a few mistakes in the answer booklet so far.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    GAMMA Mathematics
    colby2152's Avatar
    Nov 2007
    Alexandria, VA
    That doesn't mean up to the 5th term, but up to series values of k=5, so you should have a sum of values for k=2,3,4,5 which is four terms.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 20
    Last Post: Nov 27th 2012, 06:28 AM
  2. Replies: 0
    Last Post: Oct 19th 2011, 05:49 AM
  3. Replies: 4
    Last Post: Oct 27th 2010, 06:41 AM
  4. Replies: 3
    Last Post: Sep 14th 2010, 03:46 PM
  5. Replies: 2
    Last Post: Sep 2nd 2010, 11:28 AM

Search Tags

/mathhelpforum @mathhelpforum