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D( m )
m = 0
2*m^2 = 0
m = 0
m = 0
2*m^2 = 0
2*m^2 = 0
2*m^2 = 0 // : 2
m^2 = 0
m = 0
m in (-oo:0) U (0:+oo)
1/(2*m^2) = 1/m-(1/2) // - 1/m-(1/2)
1/(2*m^2)-(1/m)+1/2 = 0
1/(2*m^2)-m^-1+1/2 = 0
1/2*m^-2-m^-1+1/2 = 0
t_1 = m^-1
1/2*t_1^2-1*t_1^1+1/2 = 0
1/2*t_1^2-t_1+1/2 = 0
DELTA = (-1)^2-(1/2*1/2*4)
DELTA = 0
t_1 = 1/(1/2*2)
t_1 = 1 or t_1 = 1
t_1 = 1
m^-1-1 = 0
1*m^-1 = 1 // : 1
m^-1 = 1
-1 < 0
1/(m^1) = 1 // * m^1
1 = 1*m^1 // : 1
1 = m^1
m = 1
t_1 = 1
m^-1-1 = 0
1*m^-1 = 1 // : 1
m^-1 = 1
-1 < 0
1/(m^1) = 1 // * m^1
1 = 1*m^1 // : 1
1 = m^1
m = 1
m in { 1, 1 }
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