若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a749998aced399f906c6b8b7b5c0538d.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d99f0166779cdaaf8859ab1ab1977097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a749998aced399f906c6b8b7b5c0538d.png)
更新时间:2021-01-10 07:12:22
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填空题-单空题
|
较易
(0.85)
名校
解题方法
【推荐1】已知向量
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/282d439572ac1da5ff2ee4fb80b569e0.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbda1e8ac510572deed886d8170d766b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1c883ceaf96d997e023481461f09b4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70facc9bc02af0867d248407bd317c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/282d439572ac1da5ff2ee4fb80b569e0.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
【推荐2】下列命题中正确命题的序号是.___________ .
①若
,则
;
②设
,且
,则
的最大值为9;
③
,则
展开式中的常数项为1120;
④对任意
,都有
的否定为:存在
,使得
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5157ce5038bcda4653eb94e9b62b4d6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af6828bd0ba2b0cf5cc44699f93704e6.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be97cd1c7111b654d87d8fbb63b6a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4741556c029b5811318746d837cf246.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ed5225e8fbcd4744ddb5e964df3195.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/919f23a2706da91b09968b484bcf5286.png)
④对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ee22abb55f8847f8111a83872680ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799b324b514d6044672c133d8fef2dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6facfd546261503db0c221470f7c480.png)
您最近一年使用:0次