Final answer:
The average value of the position (x) for a linear harmonic oscillator is zero for any normalized energy eigenfunction. The values of A and B that maximize (x) are when both A and B are non-zero, and the values that minimize (x) are when either A or B (or both) are zero.
Step-by-step explanation:
The average value of the position (x) for the wave function A0 + B0i of a linear harmonic oscillator is indeed zero. This is because for any normalized energy eigenfunction, the average value of the position operator is zero.
To find the values of A and B that maximize and minimize (x), we need to rewrite the wave function in terms of x:
For the maximum value of (x), both A and B should be non-zero, so the wave function would be something like Amax + Bmaxi. For the minimum value of (x), either A or B (or both) should be zero, so the wave function would be something like Amin or Bmini.