u^2-4/u

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Solution for u^2-4/u equation: 


D( u )

u = 0

u = 0

u = 0

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

u^2-(4/u) = 0

u^2-4*u^-1 = 0

u^2-4*u^-1 = 0

u^-1*(u^3-4) = 0

1*u^3 = 4 // : 1

u^3 = 4

u^3 = 4 // ^ 1/3

u = 4^(1/3)

1/u = 0

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

u^-1 = 0

u należy do O

u = 4^(1/3)

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