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int(x^3)/(x+1)\ dx is equal to (a)x+(x^...

`int(x^3)/(x+1)\ dx` is equal to
(a)`x+(x^2)/2+(x^3)/3-log|1-x|+C`
(b) `x+(x^2)/2-(x^3)/3-log|1-x|+C`
(c) `x-(x^2)/2-(x^3)/3-log|1+x|+C`
(d) `x-(x^2)/2+(x^3)/3-log|1+x|+C`

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