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D( n )
n = 0
n = 0
n = 0
n in (-oo:0) U (0:+oo)
1.7/n = 16/30 // - 16/30
1.7/n-(16/30) = 0
1.7/n-8/15 = 0
1.7*n^-1 = 8/15 // : 1.7
n^-1 = 0.31372549
-1 < 0
1/(n^1) = 0.31372549 // * n^1
1 = 0.31372549*n^1 // : 0.31372549
3.1875 = n^1
n = 3.1875
n = 3.1875
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