名校
1 . 已知
的三边长
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/9625b1a9-194b-4930-9acc-533e21286262.png?resizew=120)
(1)求
;
(2)
的半径为3,设PQ是
的一条直径,求
的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae8221601c7bd5c51fd520615581fa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/9625b1a9-194b-4930-9acc-533e21286262.png?resizew=120)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e6508e26d0a1315131dfed21d8bb5a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56394920f440ba6cacd9b27000e320a5.png)
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名校
2 . 在平面上,
,
,
,若
,则
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7eb6925e75de0b7b7cb45d5f8da98b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15e29c718b27c6427c957fa82b1ee89a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1032f8e849a4933a4426afc57b4dcd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da0662e509823e1cee4598caec4c677a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10769b19729996c947add3ac158ca0e5.png)
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2019-12-11更新
|
752次组卷
|
3卷引用:上海市七宝中学2019-2020学年高二上学期期中数学试题
3 . 在直角
中,
,
,
,
是
内一点,且
,若
(
),则
的最大值为________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b86648fdbd414f8d4c090207b8ade74c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c25569b0e6d9746351f57fac965d41d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/786373ef66e0e4fd8ad77eaf2137805e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa72c594ebe33496fa7b9edf1db5c7e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcaac97efa5492fc72fb0f773f0c4861.png)
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