(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Find an integrating factor for:

xdy - (y + x^2 + 9y^2)dx = 0

2. Relevant equations

P(x,y)dx + Q(x,y)dy = 0

Δμ = μ_{y}P - μ_{x}Q.

where μ is the integrating factor.

3. The attempt at a solution

well, I don't know what I should do. I can use the formula I wrote but that would lead to solving a PDE. any ideas?

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# Homework Help: How to find an integrating factor for this problem?

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