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1. Integrating factor
bit stuck on following a few steps of this: Consider dy/dx +Fy=G where F and G are both functions of x only. multiplying by I, a function of x then

comparing LHS with

we get
. This implies that .

I'm a bit unsure how get from dv/dx=FI to dI/dx=FI.
2. Re: Integrating factor
You already had (your 3rd line of working) from which

and (your 4th line of working) which implies .
3. Re: Integrating factor
(Original post by steve10)
You already had (your 3rd line of working) from which

and (your 4th line of working) which implies .
Oh yeah, nice fail XD. Thank you .
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