已知函数
,
.
(1)当
时,求函数
的最小值;
(2)当
时,若关于
的不等式
在
上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c4c85ce75b861498ff03db1bfadc317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4cbc7b067862a3d9c6789b392fc068.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3129ddd2ea97fd010b9e0b644225da8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aeb9a94e392f6759b18abed89aacc5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/517386df43184beafbdd74d1b6059e05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4cbc7b067862a3d9c6789b392fc068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
22-23高三·江西上饶·阶段练习 查看更多[2]
更新时间:2023-02-06 22:11:06
|
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解答题-证明题
|
困难
(0.15)
【推荐1】函数
.
(1)求函数
的单调区间;
(2)当
时,若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a14115fa8fc7a3e413a6cfc01d8408b.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d1540b6b10f07a867618a1eec02e2a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f78ae07b1452e4f9dd8ba93db61d17.png)
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解答题-问答题
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困难
(0.15)
名校
【推荐2】已知函数
.
(Ⅰ)当
时,求函数
的单调区间;
(Ⅱ)当
时,证明:函数
有2个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f80bb085f7f11e25b87fd015dbd4531.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d4a2d4a99bf35ab3fefbdf9a442df2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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困难
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解题方法
【推荐3】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cae9174bb27aac8686e477710499639b.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/050ebca42fe277a4b37ff425998d488f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
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【推荐1】设动点M与定点
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a7e97b3198d168172382a72301e3fc5.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/413f9851aad373d782ae62b308f1de85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
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困难
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解题方法
【推荐2】设抛物线
的焦点为
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满足
.
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有三个顶点在抛物线
上,求该正方形面积的最小值.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b92dbe7d01d47d6c2db1396180caf76d.png)
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(1)求抛物线
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(2)已知正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
您最近一年使用:0次
解答题-问答题
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困难
(0.15)
【推荐1】已知
(I)求函数
的极值;
(II)若方程
仅有一个实数解,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/146a30525ffaf716fd4b86f448e71897.png)
(I)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
(II)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/285d6aef5e3634be96d2f2060bd41a3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解答题-证明题
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困难
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【推荐2】已知函数
.
(1)讨论
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(2)若方程
有两个不相等的实根
,
,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ef92a1b21dee16b769b344f033d6d23.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ab0c9b89b443de5dae60b69a94d9a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b4b6596ddd986c70c89171c047693ba.png)
您最近一年使用:0次
解答题
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困难
(0.15)
解题方法
【推荐1】设
,函数
.
(1)若函数
在
处的切线与直线
平行,求
的值;
(2)若对于定义域内的任意
,总存在
使得
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/757ae5351ca9f21836ff69b6a90467a8.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a026fe55f6e9fe8ebefa239d56d9b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若对于定义域内的任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e87fef71f3a3a067e78231d7ae4084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
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困难
(0.15)
解题方法
【推荐2】设函数
.
(1)当
时,求函数曲线
在区间
上的最值;
(2)若
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的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b38ad233f078db027bcc25b6dfc85f18.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7fefece0cf6660a409832f72dff95.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79699156efecc21a555e63da6456031a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-证明题
|
困难
(0.15)
【推荐3】(1)若
,
恒成立,求实数
的最大值
;
(2)在(1)的条件下,求证:函数
在区间
内存在唯一的极大值点
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83095be42f7ce77f75c4e0f71a6cd324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f7dcce39f3d4dc6b7faf84dc1d0a1.png)
(2)在(1)的条件下,求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c176ec440bdf80bead9cb5ff9cf95ce0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d56f1c70adf39a806ba0357df50cde5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d9000448e39783b286d6eeb177f544a.png)
您最近一年使用:0次