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 Author Comment/Response umklapp 06/29/12 1:49pm Hi, I am playing with MatrixExp in Mathematica 7. Input: "mmaatt[a_, b_, c_] := {{a, 1, 0}, {1, b, 2}, {2, 3, c}} a = 1; b = 2; c = 3; Log[Tr[MatrixExp[mmaatt[a, b, c]]]]" However, I got very weird output with # and & symbols as follows. Could someone explain it to me ? Thanks! "Log[RootSum[-1 + 4 #1 - 6 #1^2 + #1^3 &, (-5 E^#1 #1 + E^#1 #1^2)/( 4 - 12 #1 + 3 #1^2) &] + RootSum[-1 + 4 #1 - 6 #1^2 + #1^3 &, ( 3 E^#1 - 4 E^#1 #1 + E^#1 #1^2)/(4 - 12 #1 + 3 #1^2) &] + RootSum[-1 + 4 #1 - 6 #1^2 + #1^3 &, ( E^#1 - 3 E^#1 #1 + E^#1 #1^2)/(4 - 12 #1 + 3 #1^2) &]]" URL: sai.mu1986321@gmail.com,

 Subject (listing for 'Exponent of a Matrix') Author Date Posted Exponent of a Matrix umklapp 06/29/12 1:49pm Re: Exponent of a Matrix Nasser M. Ab... 06/30/12 4:29pm
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