课时同步练
1.3.2 函数的极值与导数
一、单选题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e54106589d4967095bfd412963f74595.png)
A.极大值![]() | B.极大值6,极小值3 |
C.极大值6,极小值![]() | D.极大值![]() ![]() |
【知识点】 利用导数研究函数的极值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94ed0e1b4d4ff2cd193f24ab8ae27c4d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 零点存在性定理的应用 函数极值点的辨析
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f53f81bca037a4383c1fab122a3cd3d.png)
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
【知识点】 求已知函数的极值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33770cd4511e0f50f2d959ffd913e97f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/a879d709-5752-47fc-8ec0-55158f74184f.png?resizew=180)
A.无极大值点、有四个极小值点 |
B.有一个极大值点、两个极小值点 |
C.有两个极大值点、两个极小值点 |
D.有四个极大值点、无极小值点 |
【知识点】 函数(导函数)图象与极值的关系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fccb7b8e18191aad5d3c3012e6713ced.png)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 求已知函数的极值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b5389c914ec243431417f60de73430.png)
A.0 | B.![]() | C.![]() | D.![]() |
【知识点】 求已知函数的极值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28b4e5f0c6fe496bfefab1f7be3bd561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/82e7032f-2cc5-4ef6-9e54-401f72ed9d02.png?resizew=245)
A.函数![]() |
B.函数![]() ![]() |
C.函数![]() ![]() |
D.当![]() ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7407cc453aaac49d69a76791eacd16c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354c3a283b2b21cc8ac33995aac20a5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
A.-4,4 | B.4,-4 | C.4,4 | D.-4,-4 |
【知识点】 根据极值求参数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a5ba29fcad847a7da8003fe15c818a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4821aef44a65d7d82cea330fe43aaa46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.有极大值,无极小值 | B.有极小值,无极大值 |
C.既有极大值又有极小值 | D.既无极大值也无极小值 |
【知识点】 函数极值的辨析
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12c934e782fab82d302a90a7999a1dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 根据极值求参数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/536871cebf3555cb9a3c1b08494d51f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 根据极值点求参数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799475f60fcf10742cefc41b46bea742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fe3414b32bbd1190b41ed8307f905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
二、填空题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d80629f8329ae2839401d98396643de.png)
【知识点】 函数极值点的辨析
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e526e29080061d61fb6db50428af1e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
【知识点】 根据极值点求参数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef2f907c2aa5436b11c6a7a5f0d067f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
【知识点】 求曲线切线的斜率(倾斜角) 根据极值求参数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721141740f803a210654bfeaa22ce9bc.png)
【知识点】 根据极值点求参数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59cc83fed2741f53afcaea241151c59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
【知识点】 根据极值求参数 利用导数研究函数的零点 利用导数研究方程的根
三、解答题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ede9ee76d083a9092e0635334545e2d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)是否存在实数a,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
【知识点】 利用导数求函数的单调区间(不含参) 根据极值求参数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c1e6d74adff7f318dc7dfb3a122bca.png)
(I)当a=2时,求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c959ab293ef3ecbba70b635da3e2a8.png)
(II)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c140c537245794eb60e3cd0c4853ead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)