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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
1-(23.64/x) = 0.33 // - 0.33
1-(23.64/x)-0.33 = 0
1-23.64*x^-1-0.33 = 0
-23.64*x^-1 = -0.67 // : -23.64
x^-1 = 0.02834179
-1 < 0
1/(x^1) = 0.02834179 // * x^1
1 = 0.02834179*x^1 // : 0.02834179
35.28358653 = x^1
x = 35.28358653
x = 35.28358653
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