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D( x )
8*u^6*x^4 = 0
8*u^6*x^4 = 0
8*u^6*x^4 = 0
8*u^6*x^4 = 0 // : 8*u^6
x^4 = 0
x = 0
x in (-oo:0) U (0:+oo)
(6*x^3-(2*w^6*x^5))/(8*u^6*x^4) = 0
(6*x^3-2*w^6*x^5)/(8*u^6*x^4) = 0
6*x^3-2*w^6*x^5 = 0
2*x^3*(3-(w^6*x^2)) = 0
-w^6*x^2 = -3 // : -w^6
x^2 = 3/(w^6)
x^2 = 3/(w^6) // ^ 1/2
abs(x) = (3^(1/2))/(w^3)
x = (3^(1/2))/(w^3) or x = -((3^(1/2))/(w^3))
2*x^3*(x-3^(1/2)*w^-3)*(3^(1/2)*w^-3+x) = 0
(2*x^3*(x-3^(1/2)*w^-3)*(3^(1/2)*w^-3+x))/(8*u^6*x^4) = 0
( 2*x^3 )
2*x^3 = 0 // : 2
x^3 = 0
x = 0
( 3^(1/2)*w^-3+x )
3^(1/2)*w^-3+x = 0 // - 3^(1/2)*w^-3
x = -(3^(1/2)*w^-3)
( x-3^(1/2)*w^-3 )
x-3^(1/2)*w^-3 = 0 // + -3^(1/2)*w^-3
x = -(-3^(1/2)*w^-3)
x in { 0}
x in { -(3^(1/2)*w^-3), -(-3^(1/2)*w^-3) }
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