Your answer is incorrect.

Suppose that as you move away from the point $(1,0,-2),$ the function $f(x,y,z)$ increases most rapidly in the direction $0\mathrm{.}6$vec$(i)+0\mathrm{.}8$vec$(j)$ and the rate of increase of $f$ in this direction is $5.$ At what rate is $f$ increasing as you move away from $(1,0,-2)$ in the direction of vec$(i)+$vec$(j)+$vec$(k)?$ Give your answer to $4$ decimal places.

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