lim(n→∞)Snを求めよ。
(1)Sn=Σ(k=1 to n)\(\frac{1}{k}\)(k+1)
(2)Sn=Σ(k=1 to n)\(\frac{1}{k}\)(k+1)(k+2)(k+3)
(3)Sn=Σ(k=1 to n)(k+1)/(k+2)!
lim(n→∞)Snを求めよ。
(1)Sn=Σ(k=1 to n)\(\frac{1}{k}\)(k+1)
(2)Sn=Σ(k=1 to n)\(\frac{1}{k}\)(k+1)(k+2)(k+3)
(3)Sn=Σ(k=1 to n)(k+1)/(k+2)!
質問1790を見てください。
(1) 1 。
(2) \(\frac{1}{18}\) 。
(3) \(\frac{1}{2}\) 。