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D( x )
4*u^3*w^2 = 0
4*u^3*w^2 = 0
4*u^3*w^2 = 0
4*u^3*w^2 = 0
x naleu017Cy do R
x belongs to the empty set
(10*u+6*u^3*x)/(4*u^3*w^2) = 0
x belongs to the empty set
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