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D( z )
3*z < 0
(6*z)^(5/3) < 0
(6*z)^(5/3) = 0
3*z < 0
3*z < 0
3*z+0 < 0 // - 0
3*z < 0 // : 3
z < 0/3
z < 0
(6*z)^(5/3) < 0
(6*z)^(5/3) < 0
6^(5/3)*z^(5/3) < 0
6^(5/3)*z^(5/3) < 0 // : 6^(5/3)
z^(5/3) < 0/(6^(5/3))
z^(5/3) < 0
z >= 0
z belongs to the empty set
(6*z)^(5/3) = 0
(6*z)^(5/3) = 0
6^(5/3)*z^(5/3) = 0 // : 6^(5/3)
z^(5/3) = 0
z = 0
z in (0:+oo)
((6*z)^(5/3))^(-5/2)*(3*z)^(1/2) = 0
6^(-25/6)*3^(1/2)*z^(-11/3) = 0 // : 6^(-25/6)*3^(1/2)
z^(-11/3) = 0
z naleu017Cy do O
z belongs to the empty set
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