(Solved):
(3) Show that the operator S1,S2 can be written as: S1S2=S12S22+21(S+1S ...
(3) Show that the operator S1?,S2? can be written as: S1??S2?=S12?S22?+21?(S+1?S?2?+S?1?S+2?) Then find the matrix form of operator S1??S2? in ?mx1??,mx2??? Also in ?s,ms?? (5) prove that the eigen function of operators: S12?,S22?,S12?,S22? are not all an eigen function for operator S2=(S1?+S2?)2