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यदि ` y= sqrt(x+sqrt(x+sqrt(x+ sqrt......infty )))` तब सिद्ध कीजिये की` " "(dy)/(dx) =(1)/(2y -1)`

Answer» `" " y= sqrt(x+y )" "rArr " "y^(2) =x +y `
` rArr " "2y(dy)/(dx) =1 +(dy)/(dx) `


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