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D( x )
2*v^4*y^6 = 0
2*v^4*y^6 = 0
2*v^4*y^6 = 0
2*v^4*y^6 = 0
x naleu017Cy do R
x belongs to the empty set
(8*v^4*x^6-(10*v^3))/(2*v^4*y^6) = 0
x belongs to the empty set
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