Consider a system with one degree of freedom whose dynamics is governed by a Hamiltonian of the form H(p,q) = p+9=E, where E is the total energy. Assume that initially p(p,q, 0) = (1/)6(p)e. Solve the Liouville equation for p(p,q,t). (Hint: It is useful to first transform to action-angle variables. The solution involves elliptic functions.)