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D( x )
(2*n^-1*s^4)^-1 = 0
2*n^-1*s^4 = 0
(2*n^-1*s^4)^-1 = 0
(2*n^-1*s^4)^-1 = 0
1/2*n*s^-4 = 0
x naleu017Cy do R
2*n^-1*s^4 = 0
2*n^-1*s^4 = 0
2*n^-1*s^4 = 0
x naleu017Cy do R
x belongs to the empty set
(10*n^-3*s^-2)/((2*n^-1*s^4)^-1) = 0
x belongs to the empty set
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