u^(-4/3)=1/9

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Solution for u^(-4/3)=1/9 equation: 


D( u )

u = 0

u = 0

u = 0

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

u^(-4/3) = 1/9 // - 1/9

u^(-4/3)-(1/9) = 0

u^(-4/3)-1/9 = 0

1*u^(-4/3) = 1/9 // : 1

u^(-4/3) = 1/9

-4/3 < 0

1/(u^(4/3)) = 1/9 // * u^(4/3)

1 = 1/9*u^(4/3) // : 1/9

9 = u^(4/3)

u^(4/3) = 9 // ^ 3

u^4 = 729 // ^ 1/4

abs(u) = 3*9^(1/4)

u = 3*9^(1/4) or u = -(3*9^(1/4))

u in { 3*9^(1/4), -(3*9^(1/4)) }

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