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

Problem #7 in this old exam: http://math.njit.edu/pdfs/222ex1.pdf [Broken]

... note: i didnt care about getting the IVP solvied... this is just practice and getting the general solution was all i cared about doing

2. The attempt at a solution

http://wolfsfiles.googlepages.com/scan.jpg

I think i confirmed my answer in a cas. But my confussion is if i plug the original differential equation, without making that substitution, that i get a differant general solution... and i'm not entirely sure if thats to be expected.

In short, is my answer correct :P

3. Quick question about a differant problem

Problem #3-A on that old exam:

"(d/dx)[sec(x)y]=x ...get general solution"

should the left side be expanded first, and then work the problem, or am i not seeing some easy way to seperate this thing right away.

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# Homework Help: Differential Equation substitute-to-make-seperable question

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