gusucode.com > demos工具箱matlab源码程序 > demos/expmdemo3.m
function E = expmdemo3(A) %EXPMDEMO3 Matrix exponential via eigenvalues and eigenvectors. % E = EXPMDEMO3(A) illustrates one possible way to compute the matrix % exponential. As a practical numerical method, the accuracy % is determined by the condition of the eigenvector matrix. % % See also EXPM, EXPMDEMO1, EXPMDEMO2. % Copyright 1984-2014 The MathWorks, Inc. [V,D] = eig(A); E = V * diag(exp(diag(D))) / V;