1 . 已知
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94533f45a9589e4262071d3575c1a081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8727039df72362f2d043a6552ded1782.png)
您最近一年使用:0次
2 . 已知
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751e274e9107d780c39ba9c49d6daefb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f9223bc24df8d429d743692fff7c06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ee6aa54e0d0c7aeb4a27db39530878.png)
您最近一年使用:0次
3 . 设x、y、z为非负实数,且满足:(1)
;(2)对所有
的t值有
.求证:
,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70635a0dbd52ac1e43d99aad971f8dae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07d212226826bb1d283046f73311a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c71e2553d32372688ca2afdec05fb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df72bb483c4b694c6e99590518d79ab2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c86bc889bc41d8e25f19307ae15a1304.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/350e46220d120773b13dd84ea6fee83c.png)
您最近一年使用:0次
名校
4 . 已知实数
满足:
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e325c5b5070e632e11d7a72fe8fde77c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b81c7338fb4df1c5e76ccba53b230c.png)
您最近一年使用:0次
2019-10-30更新
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481次组卷
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4卷引用:浙江省五校2019-2020学年高三上学期联考数学试题
浙江省五校2019-2020学年高三上学期联考数学试题上海市曹杨二中2019-2020学年高三上学期期中数学试题(已下线)【新东方】杭州新东方高中数学试卷318(已下线)专题02 不等式与复数(练习)