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D( x )
3*r^2-(9*r) = 0
3*r^2-(6*r) = 0
(r-i)^2+3 = 0
3*r^2-(9*r) = 0
3*r^2-(9*r) = 0
3*r^2-9*r = 0
3*r^2-9*r = 0
x naleu017Cy do R
3*r^2-(6*r) = 0
3*r^2-(6*r) = 0
3*r^2-6*r = 0
3*r^2-6*r = 0
x naleu017Cy do R
(r-i)^2+3 = 0
(r-i)^2+3 = 0
(r-i)^2+3 = 0
i^2-2*i*r+r^2+3 = 0
i^2-2*i*r+r^2+3 = 0
x belongs to the empty set
(((27-r^3)/((r-i)^2+3))/(3*r^2-(9*r)))/(3*r^2-(6*r)) = 0
x belongs to the empty set
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