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D( m )
m = 0
m = 0
m = 0
m in (-oo:0) U (0:+oo)
2*m+3/m = 1 // - 1
2*m+3/m-1 = 0
2*m^1+3*m^-1-1*m^0 = 0
(2*m^2-1*m^1+3*m^0)/(m^1) = 0 // * m^2
m^1*(2*m^2-1*m^1+3*m^0) = 0
m^1
2*m^2-m+3 = 0
2*m^2-m+3 = 0
DELTA = (-1)^2-(2*3*4)
DELTA = -23
DELTA < 0
m in { }
m belongs to the empty set
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