在平面四边形
中,点D为动点,
的面积是
面积的
倍,又数列
满足
,当
时,恒有
,设
的前
项和为
,则所有正确结论的序号是___________ .
①
为等比数列;②
为递减数列;③
为等差数列;④
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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21-22高三下·吉林·阶段练习 查看更多[5]
吉林市第一中学2021-2022学年高三4月教学质量检测数学(理)试题(已下线)2022年新高考北京数学高考真题变式题5-8题(已下线)专题27 数列求和-1(已下线)2022年新高考北京数学高考真题变式题13-15题(已下线)10.1 平面向量的线性运算及基本定理(精练)
更新时间:2022-06-10 17:18:19
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