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Homework Help: Anyone know a good site that explains matrices, no solutions, infite, etc?

  1. Oct 28, 2005 #1
    Hello everyone, Anyone know any good tutorials that can explain to me how i can perform the following:
    http://img499.imageshack.us/img499/9744/lastscan1jb.jpg [Broken]
    I know the basic jist of it, like all 000's in a row means infite, and thats about it :eek:
     
    Last edited by a moderator: May 2, 2017
  2. jcsd
  3. Oct 28, 2005 #2

    EnumaElish

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    Start with the Ax part. What does Ax mean, can you describe?
     
  4. Oct 29, 2005 #3

    TD

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    Can you find a link with the determinant of the coefficient matrix?
     
  5. Oct 29, 2005 #4
    Well A is a matrix and x = <x,y,z> if its a 3x3; when b is the value of the matrix. TD, i found lots of homework problems but no solutions :(
     
  6. Oct 29, 2005 #5

    TD

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    Have you seen the concept 'rank'? If the rank of the coefficient matrix is equal to the rank of the augemented matrix, then the system Ax = B has solutions.

    Link with the determinant: if det(A) = 0 and A is an n x n matrix, then rank(A) < n, or: A is a singular matrix. If det(A) =! 0, then A is a regular matrix and its rank is n.
     
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