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D( x )
x/0.03 <= 0
x/0.03 <= 0
x/0.03 <= 0
33.33333333*x+0 <= 0 // - 0
33.33333333*x <= 0 // : 33.33333333
x <= 0/33.33333333
x <= 0
x in (0:+oo)
(-1000/6.91)*ln(x/0.03) = 1000 // - 1000
(-1000/6.91)*ln(x/0.03)-1000 = 0
-144.71780029*ln(x/0.03)-1000 = 0 // + 1000
-144.71780029*ln(x/0.03) = 1000 // : -144.71780029
ln(x/0.03) = 1000/(-144.71780029)
ln(x/0.03) = -6.91
ln(x/0.03) = ln(e^-6.91)
x/0.03 = e^-6.91
x/0.03-e^-6.91 = 0
33.33333333*x-e^-6.91 = 0 // + e^-6.91
33.33333333*x = e^-6.91 // : 33.33333333
x = (e^-6.91)/33.33333333
x = 0.03*e^-6.91
x = 0.03*e^-6.91
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