Question: Find a unit vector in the direction in which f(x, y) = 6x7y increases most rapidly at P(-1, 1), and find the rate of

Find a unit vector in the direction in which f(x, y) =

Find a unit vector in the direction in which f(x, y) = 6x7y increases most rapidly at P(-1, 1), and find the rate of change of f at P in that direction. NOTE: Enter the exact answers. u = ||Vf(-1, 1) || = 2. Find a unit vector in the direction in which f(x, y) = 3 - 2x - 2y decreases most rapidly at P(-3,-1), and find the rate of change of f at P in that direction. NOTE: Enter the exact answers. u = -||Vf(-3,-1)|| =

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