Issue 1922 in sympy: derivative results in an illegal derivative

Status: Accepted Owner: smichr Labels: Type-Defect Priority-Medium New issue 1922 by smichr: derivative results in an illegal derivative http://code.google.com/p/sympy/issues/detail?id=1922 I'm not sure if this is a bug or a feature. When you differentiate wrt y in f(x/y) you end up with an

Re: Issue 1922 in sympy: derivative results in an illegal derivative

Updates: Status: Duplicate Mergedinto: 1660 Comment #1 on issue 1922 by asmeurer: derivative results in an illegal derivative http://code.google.com/p/sympy/issues/detail?id=1922 This is a well-known bug. There's unfortunately a bit of a chain of blocking issues to fix it,