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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-3*m^-1-1 = 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-(-3*2*4)
DELTA = 25
DELTA > 0
m = (25^(1/2)+1)/(2*2) or m = (1-25^(1/2))/(2*2)
m = 3/2 or m = -1
m in { -1, 3/2}
m in { -1, 3/2 }
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