Syntax for Differential Equations Solver / desolve()???

[ewjax]

Thanks for responses. The clearing/purging of existing variables seemed to do the trick. As an aside - that seems disconcerting that I have to remember to purge all variables prior to using the solver...

I also learned I am only able to make it work by using the y' form of differential - the dy/dx template does not seem to work (yields "undef" message).