e) the minimal value of inductor current, $i_L$, in steady state.
f) the peak-to-peak value of the output voltage ripple, in steady state.
g) the critical value of the load resistance, $R_{crit}$, showing the boundary between the CCM and the
discontinuous conduction mode (DCM).
h) When the load resistor is changed to $R_{crit}$, how much the output voltage is supposed to be in
steady state?