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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
1/x = 45.597 // - 45.597
1/x-45.597 = 0
1*x^-1 = 45.597 // : 1
x^-1 = 45.597
-1 < 0
1/(x^1) = 45.597 // * x^1
1 = 45.597*x^1 // : 45.597
0.02193127 = x^1
x = 0.02193127
x = 0.02193127
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