1/3x^3+9/x

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Solution for 1/3x^3+9/x equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

(1/3)*x^3+9/x = 0

1/3*x^3+9*x^-1 = 0

x^-1*(1/3*x^4+9) = 0

1/3*x^4 = -9 // : 1/3

x^4 = -27

1/x = 0

1*x^-1 = 0 // : 1

x^-1 = 0

x naleu017Cy do O

x belongs to the empty set

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