Question: Problem 1: Suppose that f(x, y) is a function so that f(1, 3) = 7 and Vf(1, 3) = (3, -4). (a) In what direction

Problem 1: Suppose that f(x, y) is a function so that f(1, 3) = 7 and Vf(1, 3) = (3, -4). (a) In what direction is f(x, y) increasing the fastest from (1, 3) and what is its directional derivative in this direction? (b) Find Do f(1,3), where u = V3 2 (c) In what direction(s) u is Da f(1,3) equal to 0

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