MATHS :: Lecture 17 :: Physical and Ecomonic Optimum
                  
				
Physical and Economic Optimum for  single input
            Let y = f(x) be a  response function. Here x stands for the input that is kgs of fertilizer  applied per hectare and y the corresponding output that is kgs of yield per  hectare. 
      We know that the maximum is  only when 
 and
.
This optimum is called physical optimum. We are not considering the  profit with respect to the investment, we are interested only in maximizing the  profit.
Economic optimum
            The optimum which takes  into consideration the amount invested and returns is called the economic  optimum.
                                        
where Px → stands for the per unit price of input that is  price of fertilizer per kgs.
           Py → stands  for the per unit price of output that is price of yield per kgs.
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