已知函数
.
(1)求函数
在点
处的切线方程;
(2)求函数
的最小值;
(3)函数
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e426f7804ba33a506c8645404cdb95c.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d06e33d079ac1649ee5eea8f61de7cf.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
(3)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6289962049a906dde1d22ecfc989813c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfd640a0bc9642cfecddaab6d593a10.png)
2024·天津河东·一模 查看更多[1]
更新时间:2024-03-25 22:35:25
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相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知函数
.
(1)求曲线
在点
处的切线方程;
(2)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bc48f5eb6d17d147d3384914636cb59.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953bfeb398bab2b2ba61b3e6bf0a22e.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/248a003fbbea7b9ac047b0c41a765366.png)
您最近一年使用:0次
解答题-证明题
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适中
(0.65)
【推荐2】已知函数
= 21nx—x2+ax(a
R)
(I)当a=2时,求
的图象在x=l处的切线方程;
(Ⅱ)若函数
的图象与x轴有两个不同的交点A(x1,0),B( x2,0)(0< x1< x2),
求证:
(其中
为
的导函数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0921d722a8f6f99e7815d20afe8ee32.png)
(I)当a=2时,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(Ⅱ)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1352b99b314d7d3b671359983552112b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/381248e1b6c91221cdab853027ff08e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
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解题方法
【推荐1】如图,圆形纸片的圆心为
,半径为5,该纸片上的正方形
的中心为
,
,
,
,
为圆
上的点,
,
,
,
分别是以
,
,
,
为底边的等腰三角形,沿虚线剪开后,分别以
,
,
,
为折痕折起
,
,
,
,使得
,
,
,
重合,得到四棱锥,设
.
![](https://img.xkw.com/dksih/QBM/2021/4/30/2710973393297408/2785502317985792/STEM/195bbefee9ae4db3b774332ff4a04e1e.png?resizew=174)
(1)试把四棱锥的体积
表示为
的函数;
(2)
多大时,四棱锥的体积最大?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6830ebecddbd9759be626289c408e4f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5090091503f9c176630ba736fd42e67c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac78ba10bed6d3398f0aea9a359298b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f14b86b8bf99386fc939c9c12b1355ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a0c85deb80d8e63bc60127e803f7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3d0eb5033147915c20ca6b86811ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac78ba10bed6d3398f0aea9a359298b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5fec3537f9b80e703c213e3b8b2ef33.png)
![](https://img.xkw.com/dksih/QBM/2021/4/30/2710973393297408/2785502317985792/STEM/195bbefee9ae4db3b774332ff4a04e1e.png?resizew=174)
(1)试把四棱锥的体积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20bc7f7a24e5a4c7151627d8eb2ad4e6.png)
.
(1)若存在
使得
成立,求a的取值范围;
(2)设函数
有两个极值点
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20bc7f7a24e5a4c7151627d8eb2ad4e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9bb4323c13d4a5dbc6d934f0d7b8c1.png)
(1)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53224898de85a85058ad336490bbbaa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f727ae54aff8555aa78f13a82322af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20571bf5d17d43c5ba1bb0b060d45c0f.png)
您最近一年使用:0次
解答题-问答题
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解题方法
【推荐3】已知函数
.
(1)当
时,求
在区间
上的最小值;
(2)若
在区间
上是单调递减函数,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cfc9c4f956560ed093639e79cbe8f7c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1756b564bf1d998d8179637011c88.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
|
适中
(0.65)
名校
【推荐1】已知函数
.
(1)求曲线
在点(2,2)的切线方程;
(2)当
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b636844dddba5c8e2a96f34e03c7eddb.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7376dbe3af5f7132e15d0457ac4ac2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4be9f060f0bad0cd74aed6d3a517e1c5.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】已知函数
.
(1)求曲线
在原点
处的切线方程;
(2)求函数
的单调区间及最大值;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcb0cea3a86abe583bdac4b1b8f146b0.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01dc407d2fee585aa0ad6a1c7b4e9ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42f1d4067c34c035d2122570e8347c4b.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01dc407d2fee585aa0ad6a1c7b4e9ad8.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3df5df66dbf2e4dbf00ced0a46195a45.png)
您最近一年使用:0次