ASKSAGE: Sage Q&A Forum - RSS feedhttps://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Fri, 24 Jul 2020 19:12:44 +0200Reduction to a rational expressionhttps://ask.sagemath.org/question/52656/reduction-to-a-rational-expression/I have the the following expression:
$ tan(m \cdot actan(x) + n \cdot arctan(y))$
For what values of $n,m \in \mathbb{N}$ is this expression reducible to a rational expression in $R[x,y]$, where $R$ is a generic ring?
Is there some rule $lhs => rhs $ that is needed in order to get a rational expression form the expression above?salFri, 24 Jul 2020 19:12:44 +0200https://ask.sagemath.org/question/52656/