Results 1 to 3 of 3

Math Help - summation?

  1. #1
    Junior Member
    Joined
    Jul 2008
    Posts
    29

    summation?

    Make up five data points and show that Σ(X+C) = ΣX + NC, where C is any constant (e.g., 4) and N is the number of data points. i don't get it.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor matheagle's Avatar
    Joined
    Feb 2009
    Posts
    2,763
    Thanks
    5
    \sum_{i=1}^n(a_i +C)

    means

     (a_1 +C)+(a_2 +C)+(a_3 +C)+(a_4 +C)+\cdots +(a_n +C)

    = (a_1 +a_2+a_3+a_4 +\cdots +a_n)+(C+C+C+\cdots +C)

    =\sum_{i=1}^n(a_i) +nC
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Jul 2008
    Posts
    29
    Quote Originally Posted by matheagle View Post
    \sum_{i=1}^n(a_i +C)

    means

     (a_1 +C)+(a_2 +C)+(a_3 +C)+(a_4 +C)+\cdots +(a_n +C)

    = (a_1 +a_2+a_3+a_4 +\cdots +a_n)+(C+C+C+\cdots +C)

    =\sum_{i=1}^n(a_i) +nC
    sorry, i still don't get what you mean.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. How to do a Summation
    Posted in the Pre-Calculus Forum
    Replies: 4
    Last Post: May 14th 2011, 12:08 PM
  2. Summation
    Posted in the Pre-Calculus Forum
    Replies: 6
    Last Post: May 7th 2011, 07:23 AM
  3. summation
    Posted in the Algebra Forum
    Replies: 1
    Last Post: February 2nd 2009, 09:17 AM
  4. Summation Help
    Posted in the Algebra Forum
    Replies: 9
    Last Post: January 31st 2009, 08:47 PM
  5. summation
    Posted in the Advanced Statistics Forum
    Replies: 2
    Last Post: October 8th 2008, 05:19 PM

Search Tags


/mathhelpforum @mathhelpforum