1 . 已知
.
(1)当
时,求
的最大值;
(2)当
时,求:
①
的最小值
②
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/027784069b402d7c69f8c66972a251b8.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f29d5f376c75c41ae6af0c8a8565449.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf99adccc80f28343fedd8d0aad7429.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a3368fceccc79295cc1b60d4e6c7b27.png)
您最近一年使用:0次
2023-10-13更新
|
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4卷引用:山西省吕梁市孝义市部分学校2023-2024学年高一上学期10月月考数学试题
解题方法
2 . 已知
均为正实数.
(1)求证:
,
(2)若一个直角
的两条直角边分别为
,斜边
,求直角
周长
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb2e31608320e989afeeed9a7a8482d.png)
(2)若一个直角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2023-10-13更新
|
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3卷引用:山西省吕梁市孝义市部分学校2023-2024学年高一上学期10月月考数学试题
3 . 若
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6705fbdfbf509ea0fe03821f57cced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f0b84ee4ed90face0993d4f4dda379.png)
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2023-10-13更新
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5卷引用:山西省吕梁市孝义市部分学校2023-2024学年高一上学期10月月考数学试题
4 . 已知实数
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b7124061f1eaa8f57e2a594da290e29.png)
A.有最小值2 | B.有最大值2 |
C.有最小值6 | D.无最小值 |
您最近一年使用:0次
2023-10-13更新
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341次组卷
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5卷引用:山西省吕梁市孝义市部分学校2023-2024学年高一上学期10月月考数学试题
名校
5 . 下列结论正确的是( )
A.当![]() ![]() | B.当![]() ![]() |
C.当![]() ![]() | D.当![]() ![]() |
您最近一年使用:0次
名校
6 . 如图所示,将一矩形花坛
扩建成一个更大的矩形花坛
,要求
点在
上,
点在
上,且对角线
过
点,已知
米,
米.
(1)设
的长为
米,试用
表示矩形
的面积;
(2)当
的长度是多少时,矩形花坛
的面积最小?并求出最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e6f84f2a5721303019f158d860cd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/28/f4e488c1-a7df-47f2-bcb3-4ee39bdaf858.png?resizew=173)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac31b3e5f23bf70acbc02d7fe322f69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e6f84f2a5721303019f158d860cd5b.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e6f84f2a5721303019f158d860cd5b.png)
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2023-10-11更新
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224次组卷
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5卷引用:山西省运城市教育发展联盟2023-2024学年高一上学期10月调研数学试题
7 . 已知
,
,满足
,存在实数
,使得
恒成立,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58fd231567f5e0af33f6e0b5f8f443ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20e55e98e36954b0c4de07730a38b0c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
8 . 设函数
.
(1)若
,
,
,求不等式
的解集;
(2)若
,当
时,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a881ca55f971a341b40a44e94007cff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb5bac75f36bb1dc5c8190d4dbe681d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ea60e346b9c8664e29ff53e5237dbb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e697c4ae324c13be756f63e71e856947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e6c6d519f880597f0b7720e0ff0aa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb08f5a305851c58613f7676ad3b0f82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
名校
解题方法
9 . (1)已知
,求
的最大值;
(2)已知
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b7511e6ce72a5232820b7007f976be9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebb87b1fb8ed94e7f80ba7b25765c56d.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b83a660527359758db64e6566466293.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52efb39821f406fc963ee4c14ba79b2e.png)
您最近一年使用:0次
名校
10 . (1)已知
,
,求
的取值范围;
(2)已知
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71279c10d6e121296b77947a2774969c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8663f75f229421036b43e6abbe3491a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af1ddeed7b35acd5bd47b69ff5a57f38.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752455799e49f846e2601304fec5d3b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a54894fdac46f46aeca627b41e2377a.png)
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2023-10-10更新
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4卷引用:山西省阳泉市郊区阳泉市第一中学校2023-2024学年高一上学期11月期中数学试题