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If y=xlog(x/(a+b x)),t h e nx^3(d^2y)/(d...

If `y=xlog(x/(a+b x)),t h e nx^3(d^2y)/(dx^2)=` (a)`x(dy)/(dx)-y` (b) `(x(dy)/(dx)-y)^2` `y(dy)/(dx)-x` (d) `(y(dy)/(dx)-x)^2`

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