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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
1/x = 0.0263 // - 0.0263
1/x-0.0263 = 0
1*x^-1 = 0.0263 // : 1
x^-1 = 0.0263
-1 < 0
1/(x^1) = 0.0263 // * x^1
1 = 0.0263*x^1 // : 0.0263
38.02281369 = x^1
x = 38.02281369
x = 38.02281369
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