2023届高考数学一轮复习作业数列求和新人教B版

数列求和INCLUDEPICTURE"A组.TIF"一、选择题1．(2021·四川成都高三模拟)已知数列{an}的前n项和为Sn，且满足2Sn＋an＝3，则eq \f(S1,a1)＋eq \f(S2,