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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
1.7/x = 0.15/150 // - 0.15/150
1.7/x-(0.15/150) = 0
1.7/x-0.001 = 0
1.7*x^-1 = 0.001 // : 1.7
x^-1 = 0.00058824
-1 < 0
1/(x^1) = 0.00058824 // * x^1
1 = 0.00058824*x^1 // : 0.00058824
1699.98640011 = x^1
x = 1699.98640011
x = 1699.98640011
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