ans =

   -0.0256
    0.0697
    0.0466
   -0.0906

>> M^100*A-M^15*A

ans =

   -0.0114
    0.0306
    0.0209
   -0.0401

>> M*[0;53.6;0;0]

ans =

    5.3600
   42.8800
    5.3600
         0

>> M^100*[0;53.6;0;0]

ans =

    8.7510
   20.7837
   13.1265
   10.9388

>>