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Question
If `int 1/(x + x^5)` dx = f(x) + c, then `int x^4/(x + x^5)`dx = ______
Options
f(x) − log x + c
f(x) + log x + c
log x − f(x) + c
`1/5x^5` f(x) + c
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Solution
log x − f(x) + c
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