7 #xiy T We define the function f from R² R by Sx³- ys x²+ y² if (my) + (0,0) 0 if (x,y) = (0,0) on R₂? an is of differentiable 67 6) We define the function, I and & from R-R by u(t) = t and V(t) = -t and we set (+) = (uct), NC+)) and F = fo¢ 607 Compare Flor and of (0,0) u' (o) + af (0,0) V' (0) эх dy

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A: The answer is, (-5) The detailed solution is as follows below :

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