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Math Help - Finding the integrating factor

  1. #1
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    Question 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?
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  2. #2
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    Quote Originally Posted by callkalpa View Post
    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?
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  3. #3
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    Use the integrating factor method when y'+p(x)y=q(x) if you don't have that form, you may require another method.

    Feel free to post your equation.
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  4. #4
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    Thanks a lot for your help. I managed to solve it, I could make it to be a function of y.
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  5. #5
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    Quote Originally Posted by pickslides View Post
    Use the integrating factor method when 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 y' is any nonzero function of x as well, you just have to divide the whole equation by that function before finding the integrating factor.
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