1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Matlab plotting and summation

  1. Sep 14, 2011 #1
    Hi everyone,

    Could someone please tell me how to get matlab to do the following seemingly simple task..





    Thanks for any suggestions,
  2. jcsd
  3. Sep 14, 2011 #2
    It would probably help if you wrote the question and what you are trying to do.
  4. Sep 14, 2011 #3
    Well k1 is a vector with entries 1 to 3, k1=(1 2 3).
    m is the 3 x 3 identity matrix.

    For each j, I want to do the sum from k= 1 to 3
    sum((k+k1(j)).*m(k,j)) = (1+k1(j))*m(1,j) + (2+k1(j))*m(2,j) + (3+k1(j))*m(3,j)

    Then I want to plot the values of the sum for each j.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook