Răspunsuri

2014-04-14T20:22:01+03:00
1+1/2+1/3+1/4+.....+1/n
S=(1+1/n)*n/2 supra 2  aducem la acelasi numitor in paranteza
S=n+1/n *n/2 supra 2
S=n+1/2  supra 2 
S=n+1/2*1/2=n+1/4