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D( n )
n = 0
n = 0
n = 0
n in (-oo:0) U (0:+oo)
6/n = 3/0.51 // - 3/0.51
6/n-(3/0.51) = 0
6/n-5.88235294 = 0
6*n^-1 = 5.88235294 // : 6
n^-1 = 0.98039216
-1 < 0
1/(n^1) = 0.98039216 // * n^1
1 = 0.98039216*n^1 // : 0.98039216
1.02 = n^1
n = 1.02
n = 1.02
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