Question Number 55011 by tm888 last updated on 16/Feb/19
$$\underset{{k}={o}} {\overset{{n}−\mathrm{1}} {\sum}}\frac{\mathrm{1}}{\mathrm{2}−{x}^{{k}} }\:\:\:\:{find}\:{out}\:{the}\:{summetion} \\ $$$$ \\ $$
Commented by Meritguide1234 last updated on 16/Feb/19
$$\mathrm{no}\:\mathrm{closed}\:\mathrm{form}\:\mathrm{possible} \\ $$