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D( n )
n = 0
n = 0
n = 0
n in (-oo:0) U (0:+oo)
8/n = 11/6 // - 11/6
8/n-(11/6) = 0
8/n-11/6 = 0
8*n^-1 = 11/6 // : 8
n^-1 = 11/48
-1 < 0
1/(n^1) = 11/48 // * n^1
1 = 11/48*n^1 // : 11/48
48/11 = n^1
n = 48/11
n = 48/11
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