Water efficiency is the practice of reducing water wastage by measuring the amount of water required for a particular purpose and the amount of water used or delivered. Water efficiency differs from water conservation in that it focuses on reducing waste, not restricting use.
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Step-by-step explanation:
x^2 +3xy -y^2 = 11 find dy / dx at ( 1 , 2 )
x^2 + 3xy - y^2 = 11
differentiate with respect to x
2x + 3 ( x dy / dx + y ) -2y dy / dx = 0
2x + 3x dy/ dx + 3y - 2y dy / dx = 0
3x dy / dx - 2y dy / dx + 2x = 0
dy / dx ( 3x - 2 ) + 2x = 0
dy / dx ( 3x - 2 ) = - 2x
dy / dx = - 2x / ( 3x - 2 )
put x = 1 , y = 2
dy / dx = - 2 ( 1 ) / ( 3 ( 1 ) - 2 )
dy / dx = - 2 / ( 3 - 2 )
dy / dx = - 2 / 1
dy / dx = - 2 at ( 1 , 2 )
Answer:
Water efficiency is the practice of reducing water wastage by measuring the amount of water required for a particular purpose and the amount of water used or delivered. Water efficiency differs from water conservation in that it focuses on reducing waste, not restricting use.
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