求极限lim (3^n+1-2^n+1)/(3^n+2^n)
问题描述:
求极限lim (3^n+1-2^n+1)/(3^n+2^n)
答
lim (3^n+1-2^n+1)/(3^n+2^n)
=lim (3-2×(2/3)^n)/(1+(2/3)^n)
=(3-0)/(1+0)
=3