- #1

cemar.

- 41

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**antiderivative of arctan and x function (by parts... maybe??!!)**

find antiderivative of 2xarctan(8x)

{ = antiderivative s thing.

I did it by parts at first and got

Code:

`x^2arctan(8x) - 8 * { (x^2)/(1+64x^2)`

To get the antiderivative of the second part i did it by parts again and that ended up bringing me back to the same equation that i first derived.

Im pretty lost here so any help would be really appreciated!!!

Thanks!