数列{an}的前n项和为Sn,若a1=1,a(n+1)=3Sn(n≥1),则a6=?答案是3×4^4 答案是3×4^4
问题描述:
数列{an}的前n项和为Sn,若a1=1,a(n+1)=3Sn(n≥1),则a6=?答案是3×4^4
答案是3×4^4
答
数列{an}的前n项和为Sn,若a1=1,a(n+1)=3Sn(n≥1),则a6=?答案是3×4^4
答案是3×4^4