"Assignment4: Problem 11 Previous Problem Problem List Next Problem (1 point) For each of the graphs below, use the level curves of the function z = f(x, y) to decide the sign (positive, negative, or zero) of each of the partial derivatives at the point P. Assume the x- and y-axes are in the usual positions. 13 15 fx ( P) is ? fx ( P) is ? fy (P) is ? fy ( P ) is ? fxx ( P) is ? fxx (P) is ? fyy ( P ) is ? fvy ( P) is ? fxy ( P) is ? fxy (P) is ? Note: You can earn partial credit on this problem. Preview My Answers Submit Answers You have attempted this problem 0 times. You have 10 attempts remaining MacBook Pro