Suppose f(x,y) = = tan(x) + y and u is the unit vector in the direction of (-3,-1). Then, a) ▼ f(x, y) = ) Vf(-0.9, 8) = c) fu (-0.9,8) Du f(-0.9, 8) =

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Find the component of the U along V U=(8,2), v=(3,-4)

Suppose f(x, y) (a) ▼ ƒ(x, y): = (b) ▼ƒ(1,4) = = = 0 2 x² + y² and u is the unit vector in the direction of (2, -1). Then, Your answer should be a vector Your answer should be a vector (c) fu (1, 4) = Du f(1,4) = = Your answer should be a number