If W = xy + yz + z, find directional derivative of W at (1,-2,0) in th – McqOptions

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1.	If W = xy + yz + z, find directional derivative of W at (1,-2,0) in the direction towards the point (3,6,9).
A.	-0.6
B.	-0.7
C.	-0.8
D.	-0.9
Answer» D. -0.9

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