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# C4 Integration question Watch

1. Could use some help with the attached question.

The part I am stuck on is (iii) specifically the integration of: 2r/(a^2 - r^2) ie. how to integrate with the a term on the bottom.

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2. answer.rtf (200.2 KB, 52 views)
3. a is just a constant

what's ?
4. If I take 'a' as a constant, I believe it is

$-2r / (a^2-r^2)$
5. (Original post by latslikeabat)
If I take 'a' as a constant, I believe it is

$-2r / (a^2-r^2)$
how does that relate to your integrand?

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