Ok I have two orthonormal wavefunctions of a system, \psi 1 and \psi 2 and \widehat{A} is an observable such that
\widehat{A} |\phi _{n} > = a_{n} |\phi _{n} >
for eigenvalues a sub n
what are the probabilities p1(a1) and p2(a2) of obtaining the value a sub n in the state |psi1> and...