1. The problem statement, all variables and given/known data (3xy^2+4y)dx+(3x^2y+4x)dy=0 2. Relevant equations 3. The attempt at a solution So First I checked if both equations were exact. I took the derivative of 3xy^2+4y and also derivative of the other and they were both equal so the equation is exact. I took the 3xy^2+4y and integrated it with respect to x. And then I differentiated it to y. I got 3x^2y+4x out of it. The problem is that it is exactly the same as the one from the originally equation so I did not ending up finding C. Did I do something wrong?