1. The problem statement, all variables and given/known data Use an integrating factor to determine the general solutions of the following differential equation: dx/dt - 2/t = 2t3 + (4t2)(e4t) 2. Relevant equations R(x) = e∫P(x).dx 3. The attempt at a solution Usually the equation is in the form dx/dt + P(x)t = Q(x) but here I'm not sure what to do to find P(x) here as I have 1/t, t3 and t2. I'm also not sure how to go about finding a solution either. I know that once I have found the integrating factor, I have to multiply the original equation by R(x). After that I'm not sure what to do.