Question: Consider f ( x , y ) = SQRT ( 4 x ^ 2 2 y ) ( a ) Compute Delta f ( the

Consider f(x, y)= SQRT(4 x^22y)
(a) Compute Delta f (the gradient) and then evaluate it at (2,-2)
(b) Let v =<1,2> and let u be the unit vector in the direction of v. Compute Duf (2,-2)(the directional derivative evaluated at (2,-2))

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