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D( x )
5*x <= 0
6*x <= 0
5*x <= 0
5*x <= 0
5*x+0 <= 0 // - 0
5*x <= 0 // : 5
x <= 0/5
x <= 0
6*x <= 0
6*x <= 0
6*x+0 <= 0 // - 0
6*x <= 0 // : 6
x <= 0/6
x <= 0
x in (0:+oo)
y = ln(5*x)/3-ln(6*x) // - ln(5*x)/3-ln(6*x)
ln(6*x)-(ln(5*x)/3)+y = 0
ln(1/((5*x)^(1/3)))+ln(6*x)+y = 0
ln(6*(1/((5*x)^(1/3)))*x)+y = 0
ln(1*6*e^1*(1/((5*x)^(1/3)))*x) = 0
ln(6*e*(1/((5*x)^(1/3)))*x) = 0
ln(6*e*(1/((5*x)^(1/3)))*x) = ln(e^0)
6*e*(1/((5*x)^(1/3)))*x = e^0
6*e*(1/((5*x)^(1/3)))*x-e^0 = 0
((6*e)/(5^(1/3)))*x^(2/3) = 1 // : (6*e)/(5^(1/3))
x^(2/3) = 1/((6*e)/(5^(1/3)))
x^(2/3) = 1/((6*e)/(5^(1/3))) // ^ 3
x^2 = (5*e^-3)/216 // ^ 1/2
abs(x) = (5^(1/2)*e^(-3/2))/(6*6^(1/2))
x = (5^(1/2)*e^(-3/2))/(6*6^(1/2)) or x = -((5^(1/2)*e^(-3/2))/(6*6^(1/2)))
x in { -((5^(1/2)*e^(-3/2))/(6*6^(1/2)))}
x = (5^(1/2)*e^(-3/2))/(6*6^(1/2))
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