40/x^3

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Solution for 40/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)

40/(x^3) = 0

40*x^-3 = 0 // : 40

x^-3 = 0

x należy do O

x belongs to the empty set

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