No No @asmeurer then it would return NotInplmented for most of the cases you have suggested, now i am trying to put this method for solving the second order differential equations at the place, such that we get interconnected with most of the rde.py functions soon and don't have to really get incorrect answers .
There is mostly coupled differential system (THE MAIN FUNCTION , n not the cancellation ones) that i would require your help in.
I was thinking of writing a psudeo-code for it on the blog so that i get a bit streamlined in the implementation thing