-- Feynman and Hibbs problem 3-4 A = i m / (2 hbar tb) B = -i m xb / (hbar tb) + i p / hbar "Verify equation (2)" check(-pi / A == 2 pi i hbar tb / m) check(-B^2 / (4 A) == -i m xb^2 / (2 hbar tb) - i p^2 tb / (2 m hbar) + i p xb / hbar) "ok" Run