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Help me with this Algebra Question

  1. Sep 16, 2009 #1
    Can you please provide an example of 2x2 matrices A and B, where exp(A+B)[tex]\neq[/tex]exp(A).exp(B)
     
  2. jcsd
  3. Sep 16, 2009 #2

    Dick

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    If A and B commute (i.e. AB=BA), then exp(A+B)=exp(A)exp(B). Can you find an example of two 2x2 matrices that don't commute?
     
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