Previous in Relation and Functions Next in Relation and Functions | ||
Question Number 45517 by maxmathsup by imad last updated on 13/Oct/18 | ||
$${find}\:{S}\left({x}\right)=\sum_{{n}=\mathrm{1}} ^{\infty} \:\:\frac{{x}^{{n}} }{{n}^{\mathrm{2}} }\:\:{with}\:\mid{x}\mid<\mathrm{1}\:\:. \\ $$ | ||