Q1 a) Given a production function depicting the response of paddy rice to fertilizer application, Y = 3X+ 9X2 - X3 (i) Calculate the exact MPP and APP. (ii) At what level of fertilizer input(X) does MPP, APP and TPP reach their maximum values? (lii) At what level of fertilizer input willr = 07 And what is the value of TPP at that level? (iv) If the farmer increases the amount of fertilizer in his rice production in his area of diminishing returns, explain whether or not total production will increase or decrease