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D( x )
x/100 <= 0
x/100 <= 0
x/100 <= 0
1/100*x+0 <= 0 // - 0
1/100*x <= 0 // : 1/100
x <= 0/1/100
x <= 0
x in (0:+oo)
2354.4*ln(x/100) = 0
2354.4*ln(x/100) = 0 // : 2354.4
ln(x/100) = 0
ln(x/100) = ln(e^0)
x/100 = e^0
x/100-e^0 = 0
1/100*x-1 = 0 // + 1
1/100*x = 1 // : 1/100
x = 1/1/100
x = 100
x = 100
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