Find the absolute maximum and minimum values of f the set D. )#(x, y) = 3 +Xy -x - 24,D is the closed triangular region with vertices (I,0), (5,0) and (I,4). i) f(x,y) = x²+y ) f (2 y) = x" ay" - 42y +2 %3D D={(x,y) \xls\, \yle1} Dof(x,y) l0€ x s3,0sys2} 2. x²y +4 %3D

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