2-(128/x^3)

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Solution for 2-(128/x^3) 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)

2-(128/(x^3)) = 0

2-128*x^-3 = 0

-128*x^-3 = -2 // : -128

x^-3 = 1/64

-3 < 0

1/(x^3) = 1/64 // * x^3

1 = 1/64*x^3 // : 1/64

64 = x^3

x^3 = 64 // ^ 1/3

x = 4

x = 4

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