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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(3*x^2-(1/x))^9 = 0
(3*x^2-x^-1)^9 = 0
3*x^2-x^-1 = 0
x^-1*(3*x^3-1) = 0
3*x^3 = 1 // : 3
x^3 = 1/3
x^3 = 1/3 // ^ 1/3
x = (1/3)^(1/3)
x^-1*(x-(1/3)^(1/3)) = 0
(x^-1)^9*(x-(1/3)^(1/3))^9 = 0
( x-(1/3)^(1/3) )
x-(1/3)^(1/3) = 0 // + (1/3)^(1/3)
x = (1/3)^(1/3)
( x^-1 )
1*x^-1 = 0 // : 1
x^-1 = 0
x należy do O
x in { (1/3)^(1/3), (1/3)^(1/3), (1/3)^(1/3), (1/3)^(1/3), (1/3)^(1/3), (1/3)^(1/3), (1/3)^(1/3), (1/3)^(1/3), (1/3)^(1/3) }
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