njupt
0 0 0.0000 V =
-0.4797 -0.7767 -0.4082 -0.5724 -0.0757 0.8165 -0.6651 0.6253 -0.4082
设 tol=S(1,1)*3*eps，得
tol =
1.1223e-014
设 a=sum(diag(S)>tol) - rank(A)，求 a a =
设 b=S(1,1) - norm(A)，求 b b =
设 c=sqrt(sum(diag(S*S))) - norm(A, fro )，求 c c =
3.5527e-015
设 d=S(1,1)/S(3,3) - cond(A)，求 d d =
-8
设 e=S(1,1)*S(2,2)*S(3,3) - det(A) < tol ，求 e e =
1