You are at a point P $(1$

$3,4,2)$ on the plane

$=(,)=53$

$$

$2.$

$($a$)$ In what direction must you move so that the

rate of increase of z will be greatest? $(4$ pts$)$

$($b$)$ In what direction must you move so that the rate of increase of y will be least? $(4$ pts$)$

Direction $=$

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Direction $=$

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