名校
1 . 在平面直角坐标系中,
为坐标原点,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7024cce1d5c725910f6ba2e08bf6c8.png)
其中
.
(1)求证:
三点共线;
(2)若函数
的最小值为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7024cce1d5c725910f6ba2e08bf6c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/628ca75d4be0305453035fa613704921.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/771ca8cf4b1c1d8de5ecd33555e4370e.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/debd3b179cd3a1165bce25f3c48e4595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8e75c9db745dc00e734a1ef487bd368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2021-07-23更新
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2卷引用:贵州省黔西南州金成实验学校2021-2022学年高一下学期4月质量监测数学试题