3. By how much does the halflife shown on slide 10 of lecture 6 change if 9;; doubles? 4. Briey explain the reason each of the bullet points below for the shock in the saving rate shown on slide 12 of lecture 6. I At t = 0: 3 up, so #5" up. K,(t) unchanged (unch). Negative gap created. 151/2 1111011. Balanced growth up. Y(t)/L(t) unch. o For t > 0: r605) evolves to 5*. Gap relaxes to zero. gm=Ofort0fort>0. 9171, > 9;; during relaxation. Longterm gY/L in unchanged from its value for t