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, 29 May 2020 02:09:48 +0200How to express in sage f(x^(-1)) when I have f(x)?https://ask.sagemath.org/question/51617/how-to-express-in-sage-fx-1-when-i-have-fx/ f(x^(-1)) = ? how to calculate it if I have f(x).Thu, 28 May 2020 19:39:43 +0200https://ask.sagemath.org/question/51617/how-to-express-in-sage-fx-1-when-i-have-fx/Comment by tmonteil for <p>f(x^(-1)) = ? how to calculate it if I have f(x).</p>
https://ask.sagemath.org/question/51617/how-to-express-in-sage-fx-1-when-i-have-fx/?comment=51623#post-id-51623You should provide an explicit example, since there are many ways to define `f`.Fri, 29 May 2020 02:09:48 +0200https://ask.sagemath.org/question/51617/how-to-express-in-sage-fx-1-when-i-have-fx/?comment=51623#post-id-51623Answer by tmonteil for <p>f(x^(-1)) = ? how to calculate it if I have f(x).</p>
https://ask.sagemath.org/question/51617/how-to-express-in-sage-fx-1-when-i-have-fx/?answer=51622#post-id-51622It depends on how is `f` defined. By lack of concrete example, let me provide one:
sage: f(x) = x^2
sage: f(x^(-1))
x^(-2)
Fri, 29 May 2020 02:09:26 +0200https://ask.sagemath.org/question/51617/how-to-express-in-sage-fx-1-when-i-have-fx/?answer=51622#post-id-51622