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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
54107.264 = 73044/x // - 73044/x
54107.264-(73044/x) = 0
54107.264-73044*x^-1 = 0
-73044*x^-1 = -54107.264 // : -73044
x^-1 = 0.74074892
-1 < 0
1/(x^1) = 0.74074892 // * x^1
1 = 0.74074892*x^1 // : 0.74074892
1.34998509 = x^1
x = 1.34998509
x = 1.34998509
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