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D( m )
m = 0
m = 0
m = 0
m in (-oo:0) U (0:+oo)
(4/2)*m+3/m-4-2 = 0
2*m^1+3*m^-1-6*m^0 = 0
(2*m^2-6*m^1+3*m^0)/(m^1) = 0 // * m^2
m^1*(2*m^2-6*m^1+3*m^0) = 0
m^1
2*m^2-6*m+3 = 0
2*m^2-6*m+3 = 0
DELTA = (-6)^2-(2*3*4)
DELTA = 12
DELTA > 0
m = (12^(1/2)+6)/(2*2) or m = (6-12^(1/2))/(2*2)
m = (2*3^(1/2)+6)/4 or m = (6-2*3^(1/2))/4
m in { (6-2*3^(1/2))/4, (2*3^(1/2)+6)/4}
m in { (6-2*3^(1/2))/4, (2*3^(1/2)+6)/4 }
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