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D( m )
m = 0
m = 0
m = 0
m in (-oo:0) U (0:+oo)
3.5/m = 16/32 // - 16/32
3.5/m-(16/32) = 0
3.5/m-1/2 = 0
3.5*m^-1 = 1/2 // : 3.5
m^-1 = 0.14285714
-1 < 0
1/(m^1) = 0.14285714 // * m^1
1 = 0.14285714*m^1 // : 0.14285714
7.00000014 = m^1
m = 7.00000014
m = 7.00000014
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