D Question 1 3 pts Given the function f(x, y) = x ty' - 75x - 300y + 9, find all critical points. Then use the 2nd Derivative Test to identify each critical point as local maximum, local minimum, or neither - or report that the 2nd Derivative Test is inconclusive. For this question, fill in the number of saddle points (an integer zero or above); you will show your work and report on any other critical points for the same function in the next question. D Question 2 7 pts For the same function f(x, y) from the previous question, list all the critical points (including any saddle points you identified in the previous question) and classify them using the second derivative test (if necessary, report that the 2nd derivative test is inconclusive)