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D( j )
j = 0
j = 0
j = 0
j in (-oo:0) U (0:+oo)
5.75/j = 12.82 // - 12.82
5.75/j-12.82 = 0
5.75*j^-1 = 12.82 // : 5.75
j^-1 = 2.22956522
-1 < 0
1/(j^1) = 2.22956522 // * j^1
1 = 2.22956522*j^1 // : 2.22956522
0.44851794 = j^1
j = 0.44851794
j = 0.44851794
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