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D( m )
m = 0
m = 0
m = 0
m in (-oo:0) U (0:+oo)
3.03/m = 600 // - 600
3.03/m-600 = 0
3.03*m^-1 = 600 // : 3.03
m^-1 = 198.01980198
-1 < 0
1/(m^1) = 198.01980198 // * m^1
1 = 198.01980198*m^1 // : 198.01980198
0.00505 = m^1
m = 0.00505
m = 0.00505
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