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D( w )
w^8 < 0
w = 0
w^-2 = 0
w^8 < 0
w^8 < 0
1*w^8 < 0
1*w^8 < 0 // : 1
w^8 < 0/1
w^8 < 0
w belongs to the empty set
w = 0
w = 0
w^-2 = 0
w^-2 = 0
1*w^-2 = 0 // : 1
w^-2 = 0
w należy do O
w in (-oo:0) U (0:+oo)
w^(2/3)*(((w^8)^(3/4))/(w^-2)) = 0
1*w^(26/3) = 0 // : 1
w^(26/3) = 0
w = 0
w in { 0}
w belongs to the empty set
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