Question

if known psi(x)=(2-i)e^3ix determine |psi(x)|²

Answer 1

$\psi(x)=(2-i)e^{3ix},$

$\psi^*(x)=(2+i)e^{-3ix},$

$|\psi(x)|^2=\psi\psi^*=(2-i)e^{3ix}(2+i)e^{-3ix}=5\cdot 1=5.$