名校
解题方法
1 . 已知函数
是定义在
上的奇函数,当
时,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/50dbd66f-cd10-4ba4-b089-6c6c80ead1dc.png?resizew=215)
(1)求函数
的解析式;
(2)①用定义证明函数
在
上是单调递减函数;
②判断函数
在
上的单调性,请直接写出结果;
(3)根据你对该函数的理解,在坐标系中直接作出函数
的图象.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b35633df09246e00124903894e790048.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/50dbd66f-cd10-4ba4-b089-6c6c80ead1dc.png?resizew=215)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)①用定义证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
②判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
(3)根据你对该函数的理解,在坐标系中直接作出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee97d8c31054a7150199058bc7b45cb3.png)
您最近一年使用:0次
解题方法
2 . 已知
为定义在R上的偶函数,当
时,
.
(1)用分段函数表示
时
的解析式,作出
在定义域内的图象,并指出
的值域;
(2)讨论直线
与
图象的交点个数(不需证明).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34057d0e878d2252eaff27d6b28db427.png)
(1)用分段函数表示
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/a9fd9b93-ec1a-4dbe-a9ad-eeaadc23f2f7.png?resizew=187)
(2)讨论直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30be9baff9da707f2b7cd008a6e686f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
名校
3 . 已知函数
.
(1)请完成下表,并在坐标系中画出函数
的图像;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/faad5cfc-b4db-476b-8528-999dcd7baeaa.jpg?resizew=223)
(2)根据函数
的图象,求不等式
的解集;
(3)若
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab28ed1d8b8e93d68dcb91f12c50f372.png)
(1)请完成下表,并在坐标系中画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
x | -2 | -1 | 0 | 1 | 2 |
![]() |
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/faad5cfc-b4db-476b-8528-999dcd7baeaa.jpg?resizew=223)
(2)根据函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a53a68e5c98bae20d4eff6226ade13.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7961cbe98aac6a5fdee94582c341b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9ba50ede8ef97b843accf839fef5c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
您最近一年使用:0次
解题方法
4 . 已知定义在
上的偶函数
.当
时,
.
(1)在平面直角坐标系
中作出
在
上的图象;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/74cc93c6-076d-43c9-9af8-121342c25802.png?resizew=210)
(2)若
在
上单调递增,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74ad8f7a67af3d197d74c6b47a1d67ca.png)
(1)在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f16a685cbaf10f04e6bbe3d585c9298a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/74cc93c6-076d-43c9-9af8-121342c25802.png?resizew=210)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98afed2724b83e6c7e4e09fee83470a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
5 . 已知函数
.
(1)用函数单调定义研究
在区间
上的单调性;
(2)判断函数
的奇偶性,并证明;
(3)根据函数的单调性和奇偶性作出函数
的图象,写出该函数的单调减区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bea55ef957c545e26262e45c45e53607.png)
(1)用函数单调定义研究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/310f780f4f03699023b1322a1e002539.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)根据函数的单调性和奇偶性作出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
名校
6 . 已知函数
.
(1)判断函数
的奇偶性并证明;
(2)用定义证明函数
在
上单调递增;
(3)画出函数
的图像,并直接写出函数
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc8b735d48d94f66560e70a3455d6a12.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)用定义证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
(3)画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
名校
解题方法
7 . 已知函数
定义
上的偶函数,当
时,
,
(1)在图中画出函数
的图像并根据图像写出函数
的单调增区间;
(2)求
的解析式;
(3)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e44284cb19805a584880a686ac3df9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/5dd79d5f-4e2b-41da-9db3-73215ba914db.png?resizew=188)
(1)在图中画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a33661bff1e5e33951b4783b24a994.png)
您最近一年使用:0次
解题方法
8 . 给定函数
,
,
,
,用
表示
,
,
中的较小者,记为
.
![](https://img.xkw.com/dksih/QBM/2023/11/30/3379051373395968/3379334206119936/STEM/1bf1704c28554918b744f605ef91b9c4.png?resizew=273)
(1)求函数
的解析式,画出其图象,根据图象写出函数的单调区间;
(2)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7343e8f9118952329c5c1072caa9b0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcecc8ac651ab4c23a34eaf5c8b2c682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2108f1d868fd218dc2a26d1749d64d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b426608a06477f57cb994f4d00e4465d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7183e25f3c656714ab09aa80641f960b.png)
![](https://img.xkw.com/dksih/QBM/2023/11/30/3379051373395968/3379334206119936/STEM/1bf1704c28554918b744f605ef91b9c4.png?resizew=273)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd84da85388fcc2b7b74eed6790b9318.png)
(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1e1cb9d08ff6f810c1172d917d2f56a.png)
您最近一年使用:0次
解题方法
9 . 已知函数
.
(1)若
,作出
的函数图象并求
的单调递减区间;
(2)讨论关于
的方程
的解的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80a9fc7b37f53c4e74c0a9dfb9b71d61.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)讨论关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
您最近一年使用:0次
名校
解题方法
10 . 设函数
.
(1)画出函数
的图象;
(2)写出函数
的单调递增区间;
(3)求
在区间
上的最小值
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3c2837ca79dac067e0872eded379e91.png)
(1)画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc43583c88eb3f33bfa0518bb9b206a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
您最近一年使用:0次