解题方法
1 . 非零向量
的夹角为
,且满足
,向量组
由一个
和两个
排列而成,向量组
由两个
和一个
排列而成,若
所有可能值中的最小值为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd246148371f6f825f94e68480190f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a503b3c197b23b59121b9b10ab3c4ca4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560ee2894ba8c5cee6633430cc8b3b41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f1a8e551cba7ec9f451749f60e628d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/350db0e4b2b7d1e32962028e391d9fba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560ee2894ba8c5cee6633430cc8b3b41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f1a8e551cba7ec9f451749f60e628d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a63bbbcc9b596143f09c9014f1ea0bc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/629c43355c30da5bc7577266fdf7f673.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
您最近一年使用:0次
2017-03-31更新
|
692次组卷
|
2卷引用:2017届山西省晋中市高三3月高考适应性调研考试理数试卷
2 . 已知数列
中,
,则其前
项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd2642dda2eba9b1e6db5c65a24da0a.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fd37c4aa841ebfdfcb6b4745428c672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd2642dda2eba9b1e6db5c65a24da0a.png)
您最近一年使用:0次
3 . 已知数列
的通项公式
,若对任意
恒成立,则
的取值范围是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f3bbe33c3777a7cec434533a2ef3b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/571b29b0144e9bf56fb285ec212b2830.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2017-02-08更新
|
1202次组卷
|
4卷引用:2017届山西临汾一中等五校高三文联考三数学试卷
2017届山西临汾一中等五校高三文联考三数学试卷2017届山西晋中榆社中学高三文11月月考数学试卷浙江省温州市十五校联合体2019-2020学年高一下学期期中数学试题(已下线)专题1 数列的单调性 微点1 数列单调性的判断方法(一)——定义法