设数列{Xn}满足x1=10,lgXn+1=1+lgXn,求通项Xn.
问题描述:
设数列{Xn}满足x1=10,lgXn+1=1+lgXn,求通项Xn.
答
lgxn=lg(10xn-1)吧.
xn=10xn-1=10^(n-1)x1=10^n