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D( x )
x/1.87 <= 0
x/1.87 <= 0
x/1.87 <= 0
0.53475936*x+0 <= 0 // - 0
0.53475936*x <= 0 // : 0.53475936
x <= 0/0.53475936
x <= 0
x in (0:+oo)
ln(x/1.87) = 2.36 // - 2.36
ln(x/1.87)-2.36 = 0
ln(x/1.87)-2.36 = 0 // + 2.36
ln(x/1.87) = 2.36
ln(x/1.87) = ln(e^2.36)
x/1.87 = e^2.36
x/1.87-e^2.36 = 0
0.53475936*x-e^2.36 = 0 // + e^2.36
0.53475936*x = e^2.36 // : 0.53475936
x = (e^2.36)/0.53475936
x = 1.86999999*e^2.36
x = 1.86999999*e^2.36
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