Using the commutation relations between the Pauli matrices, show that: (a) e^i ασy σx e^-i ασy=σx cos(2 α) σz sin(2 α) (b) e^i ασz σx e^-i ασz=σx cos(2 α)-σy sin(2 α) (c) e^i ασx σy e^-i ασx=σy cos(2 α)-σz sin(2 α) | Numerade