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D( m )
2*m^-4 = 0
m = 0
-10*m^8 = 0
2*m^-4 = 0
2*m^-4 = 0
2*m^-4 = 0 // : 2
m^-4 = 0
m należy do O
m = 0
m = 0
-10*m^8 = 0
-10*m^8 = 0
-10*m^8 = 0 // : -10
m^8 = 0
m = 0
m in (-oo:0) U (0:+oo)
(((2*m^-4)^-2)/(-10*m^8))*m^-5 = 0
-1/40*m^-5 = 0 // : -1/40
m^-5 = 0
m należy do O
m belongs to the empty set
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