名校
解题方法
1 . 已知数列
是等差数列,
,
,则
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b58721c6afd701af600bb554d8a0b14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9bbe98100c8067ff36ac536d043a85.png)
您最近一年使用:0次
名校
2 . 记
为等差数列
的前
项和,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/415b3b842736185ff15bed677bc70c8b.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96b250e4276bf3f328b03a66765541f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e1fa007d64fd933f953e31d1d716e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/415b3b842736185ff15bed677bc70c8b.png)
您最近一年使用:0次
2021-01-10更新
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101次组卷
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2卷引用:重庆市缙云教育联盟2022届高三上学期9月月度质量检测数学试题