设数列an满足a1=4,an=(1/3)(an-1 +2),求lim(a2+a4+...+a2n -3n)我算出来an=3*(1/3)^n+3
问题描述:
设数列an满足a1=4,an=(1/3)(an-1 +2),求lim(a2+a4+...+a2n -3n)
我算出来an=3*(1/3)^n+3
答
设数列an满足a1=4,an=(1/3)(an-1 +2),求lim(a2+a4+...+a2n -3n)
我算出来an=3*(1/3)^n+3