1. The problem statement, all variables and given/known data Verify that for the wave function |[tex]\Psi[/tex]| = a2|[tex]\Psi[/tex]21| + B2|[tex]\Psi[/tex]22| + 2aB[tex]\Psi[/tex]1[tex]\Psi[/tex]2cos(w21t) all psis are really psi(x) and the left side of the equation is pis(x,t) 2. Relevant equations a B psi's are all real 3. The attempt at a solution We are not sure about this proof. We cannot find an equation that seems to easily reach the desired right hand side of the equation.