lim(n→无限大)An=1+1/3lim(n→无限大)*(1+4/9+(4/9)^2...+(4/9)^(n-2))
问题描述:
lim(n→无限大)An=1+1/3lim(n→无限大)*(1+4/9+(4/9)^2...+(4/9)^(n-2))
答
lim(n→无限大)An=1+1/3lim(n→无限大)*(1+4/9+(4/9)^2...+(4/9)^(n-2))