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((log x)^(2))/(x) dx...

` ((log x)^(2))/(x) dx`

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`int((log x)^(2))/(x) dx" "underset(rArr(1)/(x)dx=dt)("Let " log x =t)`
`= int t^(2) dt = (t^(3))/(3)+c`
`=(1)/(3) (log x)^(3)+c`
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