如题,其中K,M已知.clearM=[46.512 0 0 0 0;0 92.55 0 0 0; 0 0 92.55 0 0; 0 0 0 92.55 0; 0 0 0 0 92.55]k=74070K=k*[1 -1 0 0 0; -1 2 -1 0 0; 0 -1 2 -1 0; 0 0 -1 2 -1; 0 0 0 -1 2]syms wA=K-w^2*M[w]=solve(det(A));w...