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Singular matrix ?

  1. Apr 21, 2004 #1
    singular matrix ????

    Hi, guys,

    < in matlab >
    what should i do if i want to get the inverse matrix but it's a singular one? can i just add a very small identity matrix like 0.00005 on the diagnol? will it change the result?

    eg:

    w0 = S\meandiff

    is that the same as

    w0 = ( S+0.00005*eye( size( S ) ) )\meandiff


    thanks!
     
  2. jcsd
  3. Apr 22, 2004 #2
    Usually if you get a singular matrix, you screwed up somewhere before the inverting step.

    cookiemonster
     
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