(d) State the government budget identity and the solvency condition for the gov- ernment. (e) Show that the model features superneutrality of money if and only if the birth/ death rate is zero and the sub-felicity function is Cobb-Douglas (o = 1). Show that, for the case with f = 0 and = 1, an unanticipated and permanent increase in the money growth rate leads to a discrete jump in the price level at impact but causes no further transitional dynamics. Show the phase diagram for real money balances and the impulse response functions for inflation, the price level, and the nominal money supply.