sorry for the so simple description
this is a expand F(x) with particle in a box energy eigenfuctions
F(x)=x(x-l) for 0<x<l and F(x)=0 elsewhere
psi is the wave function of ground state particle in a box equation
T is the kinetic energy operator
integration is not variable T
I just want to know the complex conjugate of φ
I think i figure it out , due to the φ is real, the complex conjugate of φ is itself . thanks anyway