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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
((4/3)*x^-2)/3-(((2/3)*x^-1)/3) = 0
(-2/9)*x^-1+((4/3)*x^-2)/3 = 0
4/9*x^-2-2/9*x^-1 = 0
t_1 = x^-1
4/9*t_1^2-2/9*t_1^1 = 0
4/9*t_1^2-2/9*t_1 = 0
DELTA = (-2/9)^2-(0*4/9*4)
DELTA = 4/81
DELTA > 0
t_1 = ((4/81)^(1/2)+2/9)/(4/9*2) or t_1 = (2/9-(4/81)^(1/2))/(4/9*2)
t_1 = 1/2 or t_1 = 0
t_1 = 0
x^-1+0 = 0
x^-1 = 0
1*x^-1 = 0 // : 1
x^-1 = 0
x należy do O
t_1 = 1/2
x^-1-1/2 = 0
1*x^-1 = 1/2 // : 1
x^-1 = 1/2
-1 < 0
1/(x^1) = 1/2 // * x^1
1 = 1/2*x^1 // : 1/2
2 = x^1
x = 2
x = 2
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