use sakurai - quantum mechanics please The Pauli matrices o, O and oz are 2 x 2-matrices

use sakurai - quantum mechanics please 

Transcribed Image Text:

The Pauli matrices o, O and oz are 2 x 2-matrices defined as follows o,- (: ¿). --(: "). .-(; 4) 0 1 1 Oz = %3D Consider a vector în = (ng, ny, n2)' of unit length, and în ở := n20x +NyOy + nz0z. Find the values of r ER such that I+ 2rn · ở O = 2 is a projector, where I is the identity operator. The Pauli matrices o, O and oz are 2 x 2-matrices defined as follows o,- (: ¿). --(: "). .-(; 4) 0 1 1 Oz = %3D Consider a vector în = (ng, ny, n2)' of unit length, and în ở := n20x +NyOy + nz0z. Find the values of r ER such that I+ 2rn · ở O = 2 is a projector, where I is the identity operator.