"Verify equation (3)" a = i (tb - ta) / (2 m hbar) b = i (xb - xa) / hbar check(1 / (2 pi hbar)^2 pi / a == m / (2 pi i hbar (tb - ta))) check(b^2 / (4 a) == i m (xb - xa)^2 / (2 hbar (tb - ta))) "ok" Run