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If y^3-y=2x ,t h e n(x^2-1/(27))(d^2y)/(...

If `y^3-y=2x ,t h e n(x^2-1/(27))(d^2y)/(dx^2)+x(dy)/d=` `y` b. `y/3` c. `y/9` d. `y/(27)`

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