Fair do's impressive post, I liked your shorthand way of solving FODE, that will help a lot of people, so well done for that.
Just something to consider, if you used a bot to upvote your post sometimes it can work against you. For example people with heavy votes may not want to vote on a post that has 99 votes already, as some people look to gain SP, this may put them off. Secondly, @curie the curation group don't like to upvote posts that have used bots, curie can give you a big ass upvote believe me, so I'd stay away from using bots and stick to good old faith in the community.
RE: A Shortcut Solution for Obtaining the General Solution of First-Order Exact Differential Equations