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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
1/x = 902.7 // - 902.7
1/x-902.7 = 0
1*x^-1 = 902.7 // : 1
x^-1 = 902.7
-1 < 0
1/(x^1) = 902.7 // * x^1
1 = 902.7*x^1 // : 902.7
0.00110779 = x^1
x = 0.00110779
x = 0.00110779
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