Question: I ] let , gradf ( x , y , z ) = ( : 2 , 2 , 1 : ) is there a

I] let ,gradf(x,y,z)=(:2,2,1:) is there a unit rector which maximizes the directional derivative? if so, find it. If not, explain why
I ] let , gradf ( x , y , z ) = ( : 2 , 2 , 1 : )

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