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D( x )
(x^1)/2 <= 0
(x^1)/2 <= 0
(x^1)/2 <= 0
x/2 <= 0
1/2*x+0 <= 0 // - 0
1/2*x <= 0 // : 1/2
x <= 0/1/2
x <= 0
x in (0:+oo)
ln((x^1)/2) = 0
ln(x/2) = 0
ln(x/2) = ln(e^0)
x/2 = e^0
x/2-e^0 = 0
1/2*x-1 = 0 // + 1
1/2*x = 1 // : 1/2
x = 1/1/2
x = 2
x = 2
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