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