S160的知识精选

已知等差数列{an}的前n项和为Sn,a8=1,S16=0,当Sn取最大值时n的值()A.7         ...
问题详情:已知等差数列{an}的前n项和为Sn,a8=1,S16=0,当Sn取最大值时n的值()A.7                  B.8                  C.9                  D.10【回答】B【解...
热门标签