解题方法
1 . 定义在R上的奇函数
有最小正周期4,且
时,
.
(1)求
在
上的解析式;
(2)判断
在(0,2)上的单调性,并给予证明;
(3)当
为何值时,关于方程
在
上有实数解?
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571961543532544/1571961549447168/STEM/66de333a46d942958c3d35ceb8499b19.png)
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571961543532544/1571961549447168/STEM/99819db6c17c4d74ae55ffc0ea962ba7.png)
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571961543532544/1571961549447168/STEM/90bccc1a5bd54257a851f4ad3d740de7.png)
(1)求
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571961543532544/1571961549447168/STEM/66de333a46d942958c3d35ceb8499b19.png)
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571961543532544/1571961549447168/STEM/c583d242451147b0a439b48eb1caedcc.png)
(2)判断
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571961543532544/1571961549447168/STEM/66de333a46d942958c3d35ceb8499b19.png)
(3)当
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571961543532544/1571961549447168/STEM/43b6e9703f674452b4a03ec15818f1f3.png)
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571961543532544/1571961549447168/STEM/9a92fdfc8a3f477da46983cc88287daa.png)
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571961543532544/1571961549447168/STEM/c583d242451147b0a439b48eb1caedcc.png)
您最近一年使用:0次
2016-12-03更新
|
879次组卷
|
2卷引用:2015届江西省吉安市一中高三上学期期中考试理科数学试卷
12-13高三上·江苏扬州·阶段练习
解题方法
2 . 对于三次函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbb68078590e8785def6cb1d7e0126a.png)
.
定义:①设
是函数
的导数
的导数,若方程
有实数解
,则称点
为函数
的“拐点”;
定义:②设
为常数,若定义在
上的函数
对于定义域内的一切实数
,都有
成立,则函数
的图象关于点
对称.
已知
,请回答下列问题:
(1)求函数
的“拐点”
的坐标
(2)检验函数
的图象是否关于“拐点”
对称,对于任意的三次函数写出一个有关“拐点”的结论(不必证明)
(3)写出一个三次函数
,使得它的“拐点”是
(不要过程)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbb68078590e8785def6cb1d7e0126a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f2b5ee1eabb64358a3d9db2349b6fce.png)
定义:①设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aac282e92da3691942a6ba8511de2303.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d31f9ce464f2ce3b24833b70595941c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc581690f1d82133bb5fed3d7f365f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/641790f25de4850d4dde3e370db820c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
定义:②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905b9677c88be032f6f283ea9194f2b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/641790f25de4850d4dde3e370db820c6.png)
已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec5a67c1baa2a00e8edf1cda8c932203.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)检验函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(3)写出一个三次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92860378096f519a8fb276d07dbfabce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a7e88b74f492f89e21e4cf65353bdb6.png)
您最近一年使用:0次
解题方法
3 . 已知
,函数
.
(1)当
时,求不等式
的解集;
(2)若
的图象与
轴围成的三角形面积等于6时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65e349c89dc8c882dbdeac84f81c8d0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d752d8db8a05b3ec7312f6ac8b64a07.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-10-30更新
|
252次组卷
|
2卷引用:四川省雅安市2024届高三零诊考试数学(理)试题
名校
4 . 设函数
是定义域
的奇函数.
(1)求
值;
(2)若
,试判断函数单调性并求使不等式
在定义域上恒成立的
的取值范围;
(3)若
,且
在
上最小值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9792b5c98744d61f36c40aabf27e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d8742c296a7949b598114a34c51f69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8e888061c6253a359e5644da48228f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e273784487d908f05bfba0d705a67d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1b6a97182bf7e313389bd039241974.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2022-10-14更新
|
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9卷引用:江苏省宿迁市泗阳县实验高级中学2022-2023学年高三美术班上学期第一次质量调研数学试题
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