Question: b) Find Duf at the given point P, U is the unit vector in the PQ way and direction. Find Duf, if U is a

b) Find Duf at the given point P, U is the unit vector in the PQ way and direction. Find Duf, if U is a unit vector for which Duf is a maximum. (i) f(x,y) = e* cosy + ey sinx; P(1,0), Q(-3, -3)

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