www.gusucode.com > symbolic工具箱matlab源码程序 > symbolic/@sym/logm.m
function Y = logm(X) %LOGM Symbolic matrix logarithm. % LOGM(A) is the matrix logarithm of the symbolic matrix A. % Unlike LOGM(A) for a double matrix A, this function does not % print a warning if A has negative Eigenvalues. % % Examples: % syms t % A = [0 1; -1 0] % logm(t*A) % % A = sym(gallery(5)) % logm(t*A) % Copyright 2014 The MathWorks, Inc. Y = privResolveOutput(funm(formula(X),@log),X);