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- function E = expm2(A)
- %EXPM2 Matrix exponential via Taylor series.
- % E = expm2(A) illustrates the classic definition for the
- % matrix exponential. As a practical numerical method,
- % this is often slow and inaccurate.
- % See also EXPM, EXPM1, EXMP3.
-
- % Copyright (c) 1984-93 by The MathWorks, Inc.
-
- % Taylor series for exp(A)
- E = zeros(size(A));
- F = eye(size(A));
- k = 1;
- while norm(E+F-E,1) > 0
- E = E + F;
- F = A*F/k;
- k = k+1;
- end
-