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D( t )
t < 0
t = 0
t < 0
t = 0
t = 0
t in (0:+oo)
t^(-1/2)-(16*t^(-5/2)) = 0
t^(-1/2)-16*t^(-5/2) = 0
t_1 = t^(-1/2)
1*t_1^1-16*t_1^5 = 0
t_1-16*t_1^5 = 0
t_1*(1-16*t_1^4) = 0
-16*t_1^4 = -1 // : -16
t_1^4 = 1/16
t_1^4 = 1/16 // ^ 1/4
abs(t_1) = 1/2
t_1 = 1/2 or t_1 = -1/2
t_1 = 0
t_1 = 0
t_1 = 1/2
t^(-1/2)-1/2 = 0
1*t^(-1/2) = 1/2 // : 1
t^(-1/2) = 1/2
-1/2 < 0
1/(t^(1/2)) = 1/2 // * t^(1/2)
1 = 1/2*t^(1/2) // : 1/2
2 = t^(1/2)
t^(1/2) = 2 // ^ 2
t = 4
t_1 = -1/2
t^(-1/2)+1/2 = 0
1*t^(-1/2) = -1/2 // : 1
t^(-1/2) = -1/2
-1/2 < 0
1/(t^(1/2)) = -1/2 // * t^(1/2)
1 = -1/2*t^(1/2) // : -1/2
-2 = t^(1/2)
t^(1/2) = -2 // ^ 2
t = 4
t_1 = 0
t^(-1/2)+0 = 0
t^(-1/2) = 0
1*t^(-1/2) = 0 // : 1
t^(-1/2) = 0
t należy do O
t in { 4, 4 }
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