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# FP3 Intergration watch

1. I don't understand after breaking up sqrt(25-x^2) and all that how it integrates into In= 25(n-1)In-2 - (n-1)In
What is it i'm not seeing?
Sorry i don't know how to types maths haha.
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2. (Original post by I'msoPi)
I don't understand after breaking up sqrt(25-x^2) and all that how it integrates into In= 25(n-1)In-2 - (n-1)In
What is it i'm not seeing?
Sorry i don't know how to types maths haha.
Note that can be put outside, and that

This means the integral can be rewritten as

The first integral is and the second is
3. (Original post by RDKGames)
Note that can be put outside, and that

This means the integral can be rewritten as

The first integral is and the second is
Yeah I put that (n-1) outside too, just makes life easier haha. Thank you so much for breaking it down for me, I was stumped for quite some time. It's clear as day now. Thanks again

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