Variable y_t follows MA(2) model.

y_t = 4.3 + e_t + 0.9* e_{t -1} + 0.1*e_t-2

e_t is normally distributied w.noise process, variance o² =6

calculate the response of y_t+1 to a shock et , response described; IR(y_t+1 | e_t) = dy_t+1 / de_t

calculate the response of y_t+2 to a shock et, IR(y_t+2 | e_t) = dy_t+2 / de_t