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\fO P, Q, and R O R only D Question 6 4.5 pts If f(x, y) = a In(2x - y), calculate fa(e, e) + fy(e, e). 0 3 0 4 0 1 OO 0 2298 Quizzes Zoom Conferences ? D Question 10 4.5 pts Consider the function f(x, y) = 23 - tan(2y) at the point P (1, 0). Which of the following is/are true? P. The maximum rate of change of fat Pis V10. Q. f does not change at P in the direction (-3, 2). R. There exists a unit vector u such that Da f(P) = 2. O P and R O Q and R O Q only O R only O P and