Here goes (...in german)




Please be aware that I am not a mathematician, and I'm not trying to be one. So I'm fully aware of the fact that this is sloppy at best and possibly wrong at worst, though it does give the correct solution. Anyway, at the very least, it helps a little.

Another thing: While this way of Seperation of variables works very well for this kind of differential equation (always a good thing to try when you only got one derivative), this way of writing it is not quite mathematically precise and correct. So depending on your professor, you might want to present it differently

Still hope it helps, though.