please help with as much detail as possible on how to solve a and b as clearly as possible

0.64 Consider a particle in a one-dimensional box in the ground state 1 and the first excited state 2 described by the wave functions listed below. For each wave function, calculate the expectation value of the position x, the expectation value of the position squared x2, the expectation value of the momentum p, and the expectation value of the momentum squared p2. (a) 1(x)=a2sinax (b) 2(x)=a2sina2x0xa