1.

यदि ` sqrt( x+y )+ sqrt(y-x)=lambda ,` तब `(d^(2)y)/(dx^(2))=`A. `(-2)/(lambda ^(2))`B. ` (2)/(lambda ^(2))`C. ` (2)/(lambda)`D. इनमें से कोई नहीं

Answer» Correct Answer - B


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