Question: 2) a) Let f(x, y)= arctan(x + y) and Daf (P)=Vf(P).. Find the 1 direction = cos 0+ sine for which Duf (0,1) =

2) a) Let f(x, y)= arctan(x + y) and Daf (P)=Vf(P).. Find

2) a) Let f(x, y)= arctan(x + y) and Daf (P)=Vf(P).. Find the 1 direction = cos 0+ sine for which Duf (0,1) = 2 } (15p)

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