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.Mon, 13 Aug 2018 18:24:41 +0200How can I calculate this sum? (accept both sage(cocalc) and by hand)https://ask.sagemath.org/question/43364/how-can-i-calculate-this-sum-accept-both-sagecocalc-and-by-hand/ How can I calculate this sum?
1/1-(x+x^2)^2
* This is the sum of infinity formula : a/1-r, while a=1 and r=(x+x^2)^2
Please also confirm if my formula is right.pizzaMon, 13 Aug 2018 18:24:41 +0200https://ask.sagemath.org/question/43364/