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