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'ball's temperature' T is Inversely proportional with 'Distance from the center of the ball' when tempertature...

'ball's temperature' T is Inversely proportional with 'Distance from the center of the ball'

when tempertature is 120'C on point (1,2,2),

(a) find Rate of change of T from (1,2,2) to (2,1,3)

(b) find unit vector that fastest increasing T direction from (2, -1, -2)

(sry for poor english)

Math   Calculus   
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