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Description 
Video Solution 
image Solution 
What is maxima and minina and steps ? 

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APPLICATION OF MAXIMA AND MINIMA 

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A metal wire 36 cm long is bent to form a rectangle. Find its dimensions when its area is maximum. 

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A 100 m fence is to be applied to three sides of a rectangle, find the dimensions of the rectangle so that the area will be maximum. 

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A rectangular box is to be made out of metal sheet 16 cm 10 cm by cutting of equal squares from the corners and turning up sides. Find the side of the square cut off if the volume of box is to be maximum. 

Online test for Exact differential problems : Link {You get result on finishing test} 