Question: Tutorial Exercise Find all the points at which the direction of fastest change of the function f(x, y) = X2 +y28X10yisi+j. The direction in which

Tutorial Exercise Find all the points at which the direction of fastest change of the function f(x, y) = X2 +y28X10yisi+j. The direction in which the maximum rate of change of f(x, y) occurs at a point (a, b) is given by the vector Vf(a, b). For f(x, y) = x2 + y2 8x 10y, we have Vf(x, Y) =

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