Thanks, Voko. That's exactly what I was looking for. Now I just need to refresh myself on the mechanics of the substitution rule...
HallsofIvy, I think you found where the hole in my knowledge is. Both the chain rule and the substitution rule (for integration) are something I've kind of...
I'm just starting my DE class, although I've been familiar with separable DEs for a while. Although they're (so far) pretty straight-forward to solve, I don't really understand the theory behind seperable DEs. In calc 1, it was stressed that dy/dx is NOT a fraction that can be "taken apart."...