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D( x )
(-2*w^3*z-1)^-3 = 0
-2*w^3*z-1 = 0
(-2*w^3*z-1)^-3 = 0
(-2*w^3*z-1)^-3 = 0
1/((-2*w^3*z-1)^3) = 0
-2*w^3*z-1 = 0
-2*w^3*z-1 = 0
-2*w^3*z-1 = 0
x należy do R
x belongs to the empty set
(3*5*w^-2*w^-1*z^-3)/((-2*w^3*z-1)^-3) = 0
x belongs to the empty set
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