3. Consider a system with T = (q? +q2), V = f(q -q2), where f is yet unspecified. Choose a new set of generalized coordinates, q1, q2, to reduce the equations of motion to an integral involving f. Find q,(t),q,(t) for general initial conditions if f (x) = x2. (Hint: Choose, say, q2, so that (qi, d = 0 .) 092