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D( t )
t-t^4 = 0
3*t-t^3 = 0
t-t^4 = 0
t-t^4 = 0
t-t^4 = 0
t*(1-t^3) = 0
-1*t^3 = -1 // : -1
t^3 = 1
t^3 = 1 // ^ 1/3
t = 1
t = 0
t = 0
3*t-t^3 = 0
3*t-t^3 = 0
3*t-t^3 = 0
t*(3-t^2) = 0
-1*t^2 = -3 // : -1
t^2 = 3
t^2 = 3 // ^ 1/2
abs(t) = 3^(1/2)
t = 3^(1/2) or t = -3^(1/2)
t = 0
t = 0
t in (-oo:-3^(1/2)) U (-3^(1/2):0) U (0:1) U (1:3^(1/2)) U (3^(1/2):+oo)
((t^3-(3*t))/(t-t^4))*((t^4-t)/(3*t-t^3)) = 0
((t^3-3*t)/(t-t^4))*((t^4-t)/(3*t-t^3)) = 0
((t^3-3*t)*(t^4-t))/((t-t^4)*(3*t-t^3)) = 0
t^3-3*t = 0
t*(t^2-3) = 0
1*t^2 = 3 // : 1
t^2 = 3
t^2 = 3 // ^ 1/2
abs(t) = 3^(1/2)
t = 3^(1/2) or t = -3^(1/2)
t*(t-3^(1/2))*(t+3^(1/2)) = 0
t-t^4 = 0
t*(1-t^3) = 0
-1*t^3 = -1 // : -1
t^3 = 1
t^3 = 1 // ^ 1/3
t = 1
t*(t-1) = 0
t^4-t = 0
t*(t^3-1) = 0
1*t^3 = 1 // : 1
t^3 = 1
t^3 = 1 // ^ 1/3
t = 1
t*(t-1) = 0
3*t-t^3 = 0
t*(3-t^2) = 0
-1*t^2 = -3 // : -1
t^2 = 3
t^2 = 3 // ^ 1/2
abs(t) = 3^(1/2)
t = 3^(1/2) or t = -3^(1/2)
t*(t-3^(1/2))*(t+3^(1/2)) = 0
(t^2*(t-3^(1/2))*(t+3^(1/2))*(t-1))/(t^2*(t-1)*(t-3^(1/2))*(t+3^(1/2))) = 0
( t+3^(1/2) )
t+3^(1/2) = 0 // - 3^(1/2)
t = -3^(1/2)
( t-1 )
t-1 = 0 // + 1
t = 1
( t-3^(1/2) )
t-3^(1/2) = 0 // + 3^(1/2)
t = 3^(1/2)
( t )
t = 0
t in { -3^(1/2)}
t in { 1}
t in { 3^(1/2)}
t in { 0}
t belongs to the empty set
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