一直调试的问题是：Error using ==> mtimes Inner matrix dimensions must agree.A=[1 0.5 0;0 1 0.5;0.5 0 1];D=diag(diag(A)); L=-tril(A,-1); U=-triu(A,1); B=(inv(D-L*w)*((1-w)*D+w*U));[v,d]=eigs(B);w=-2:0.1:4;c=myTest(d);plot(w,c);A=[1 0.5 0;0 1