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D( X )
3-X <= 0
3-X <= 0
3-X <= 0
3-X <= 0
-X <= -3 // * -1
X >= 3
X in (-oo:3)
ln(3-X) = 1/4 // - 1/4
ln(3-X)-(1/4) = 0
ln(3-X)-1/4 = 0
ln(3-X)-1/4 = 0 // + 1/4
ln(3-X) = 1/4
ln(3-X) = ln(e^(1/4))
3-X = e^(1/4)
3-X-e^(1/4) = 0 // - 3-e^(1/4)
-X = -(3-e^(1/4)) // * -1
X = 3-e^(1/4)
X = 3-e^(1/4)
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