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