# Thread: Finding the integrating factor

1. ## Finding the integrating factor

This is about exact first order differential equation,
In a case where the given equating is not a exact one, we find the integrating factor.
To find the integrating factor we wither find a function of x, or y.

My question is in a case where we can't find a function of x and y alone, how can we find the integrating factor?

2. Originally Posted by callkalpa
This is about exact first order differential equation,
In a case where the given equating is not a exact one, we find the integrating factor.
To find the integrating factor we wither find a function of x, or y.

My question is in a case where we can't find a function of x and y alone, how can we find the integrating factor?
Do you have a specific equation in mind?

3. Use the integrating factor method when $\displaystyle y'+p(x)y=q(x)$ if you don't have that form, you may require another method.

Feel free to post your equation.

4. Thanks a lot for your help. I managed to solve it, I could make it to be a function of y.

5. Originally Posted by pickslides
Use the integrating factor method when $\displaystyle y'+p(x)y=q(x)$ if you don't have that form, you may require another method.

Feel free to post your equation.
It works if your coefficient of $\displaystyle y'$ is any nonzero function of $\displaystyle x$ as well, you just have to divide the whole equation by that function before finding the integrating factor.