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D( m )
m^2 = 0
3*m^2 = 0
m^2 = 0
m^2 = 0
1*m^2 = 0 // : 1
m^2 = 0
m = 0
3*m^2 = 0
3*m^2 = 0
3*m^2 = 0 // : 3
m^2 = 0
m = 0
m in (-oo:0) U (0:+oo)
3/(m^2) = (m-4)/(3*m^2)+2/(3*m^2) // - (m-4)/(3*m^2)+2/(3*m^2)
3/(m^2)-((m-4)/(3*m^2))-(2/(3*m^2)) = 0
3/(m^2)-((m-4)/(3*m^2))+(-2/3)*m^-2 = 0
(-1*(m-4))/(3*m^2)+3/(m^2)-2/(3*m^2) = 0
(-1*m^2*(m-4))/(3*m^2*m^2)+(3*3*m^2)/(3*m^2*m^2)+(-2*m^2)/(3*m^2*m^2) = 0
3*3*m^2-1*m^2*(m-4)-2*m^2 = 0
13*m^2-m^3-2*m^2 = 0
11*m^2-m^3 = 0
11*m^2-m^3 = 0
m^2*(11-m) = 0
11-m = 0 // - 11
-m = -11 // * -1
m = 11
m^2*(m-11) = 0
(m^2*(m-11))/(3*m^2*m^2) = 0
(m^2*(m-11))/(3*m^2*m^2) = 0 // * 3*m^2*m^2
m^2*(m-11) = 0
( m-11 )
m-11 = 0 // + 11
m = 11
( m^2 )
1*m^2 = 0 // : 1
m^2 = 0
m = 0
m in { 0}
m = 11
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