9y/x^3+3y

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


D( x )

x^3 = 0

x^3 = 0

x^3 = 0

1*x^3 = 0 // : 1

x^3 = 0

x = 0

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

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

9*x^-3*y = -(3*y) // : 9*y

x^-3 = -1/3

-3 < 0

1/(x^3) = -1/3 // * x^3

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

-3 = x^3

x^3 = -3 // ^ 1/3

x = -3^(1/3)

x = -3^(1/3)

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