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Find the directional derivative of f( x) = xy^2+ yz^3 at the point p (2,-1,1) in the direction of PQ where Q is the point (3,1,3)

By Gabriella

Find the directional derivative of f( x) = xy^2+ yz^3 at the point p (2,-1,1) in the direction of PQ where Q is the point (3,1,3)

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Gabriella

b. A numbers decreased by 40% gives 135. The number is
(i) 175 (ii) 200 (iii) 250
(iv) 225​

Class 7th mathema

the cost of 2 kg of apple and I kg of grapes on a day was found to be rs160.after a month,cost of 4kg of apple and 2kg of grapes i

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