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D( m )
m = 0
m = 0
m = 0
m in (-oo:0) U (0:+oo)
0.32/0.56 = 8/m // - 8/m
0.32/0.56-(8/m) = 0
0.32/0.56-8*m^-1 = 0
-8*m^-1 = -0.57142857 // : -8
m^-1 = 0.07142857
-1 < 0
1/(m^1) = 0.07142857 // * m^1
1 = 0.07142857*m^1 // : 0.07142857
14.00000028 = m^1
m = 14.00000028
m = 14.00000028
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