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7/3 log(2 - x) - 1/3 log(x + 1) - (7/3 ln(x - 2) - 1/3 ln(x + 1))
7/3 log(2 - x) - 1/3 log(x + 1) - (7/3 ln(x - 2) - 1/3 ln(x + 1))
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