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Degree of matrices

  1. Mar 26, 2005 #1
    Hi everyone,
    I know that multiplication of matrices is not commutative, then let's say I am asked to find A^3 how would I do that:
    A * A * A = (A * A) * A, i.e. first in the parenthesis and then the last one?

    Thanks.
     
  2. jcsd
  3. Mar 26, 2005 #2

    Hurkyl

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    However, matrix multiplication is associative: you can parenthize however you like.
     
  4. Mar 26, 2005 #3
    OoooK, thanks, that's what I have been trying to distinguish: commutativity and associativity.
     
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