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D( r )
r = 0
r^3 = 0
r = 0
r = 0
r^3 = 0
r^3 = 0
1*r^3 = 0 // : 1
r^3 = 0
r = 0
r in (-oo:0) U (0:+oo)
3/r = 5/(r^3) // - 5/(r^3)
3/r-(5/(r^3)) = 0
3/r-5*r^-3 = 0
3*r^-1-5*r^-3 = 0
t_1 = r^-1
3*t_1^1-5*t_1^3 = 0
3*t_1-5*t_1^3 = 0
t_1*(3-5*t_1^2) = 0
-5*t_1^2 = -3 // : -5
t_1^2 = 3/5
t_1^2 = 3/5 // ^ 1/2
abs(t_1) = (3/5)^(1/2)
t_1 = (3/5)^(1/2) or t_1 = -(3/5)^(1/2)
t_1 = 0
t_1 = 0
t_1 = (3/5)^(1/2)
r^-1-(3/5)^(1/2) = 0
1*r^-1 = (3/5)^(1/2) // : 1
r^-1 = (3/5)^(1/2)
-1 < 0
1/(r^1) = (3/5)^(1/2) // * r^1
1 = (3/5)^(1/2)*r^1 // : (3/5)^(1/2)
1/((3/5)^(1/2)) = r^1
r = 1/((3/5)^(1/2))
t_1 = -(3/5)^(1/2)
r^-1+(3/5)^(1/2) = 0
1*r^-1 = -(3/5)^(1/2) // : 1
r^-1 = -(3/5)^(1/2)
-1 < 0
1/(r^1) = -(3/5)^(1/2) // * r^1
1 = -(3/5)^(1/2)*r^1 // : -(3/5)^(1/2)
1/(-(3/5)^(1/2)) = r^1
r = 1/(-(3/5)^(1/2))
t_1 = 0
r^-1+0 = 0
r^-1 = 0
1*r^-1 = 0 // : 1
r^-1 = 0
r należy do O
r in { 1/((3/5)^(1/2)), 1/(-(3/5)^(1/2)) }
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