Evaluate the average of the square of the linear momentum of the quantum harmonic oscillator for the ground state and first two excited states. In evaluating integrals of this type, ∫f(x)dx=0[infinity]−[infinity]if f(x) is an odd function of x, ∫f(x)dx=[infinity]−[infinity]2∫f(x) dx[infinity]0if f(x) is an even function of x. The definition ofodd andeven functionsaref(-x) = -f(x) andf(-x) = f(x), respectively.