解题方法
1 . 函数
,被称为狄利克雷函数,其中
为实数集,
为有理数集.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/26/567b0412-b11e-4e6b-9be3-2a7d4d5f2602.png?resizew=204)
(1)判断
的奇偶性,并证明;
(2)设
是定义域为
的奇函数,当
时,
,画出
的图像,并根据图象写出
的单调区间及零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06f15945e5fa788b076edf86fbf3e42b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ecb1589c3cc179e2f62507020771e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/26/567b0412-b11e-4e6b-9be3-2a7d4d5f2602.png?resizew=204)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f5a719332bc8af83fbe70fa6cf632d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.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/f440b7118356ed74fc494ed27a91191c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
您最近一年使用:0次
名校
2 . 设
(
为实常数),
与
的图像关于原点对称.
(1)若函数
为奇函数,求
值;
(2)当
,若关于x的方程
有两个不等实根,求
的范围;
(3)当
,求方程
的实数根的个数,并加以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6722cc1dd056370f301ce8a7d1553aa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cea6b602e846f19cbdc0da09459a48b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38af85a827d1e77e368dc76e2a2b02d.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152e3782f914ada5c7cb890ccbd7600f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db40ea860ab3b7ac6b12c623679276ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55c9f1a79c0594ee6ade90d9718aeaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8bfb563f79688d136e0cb958b5153c.png)
您最近一年使用:0次
2022-01-22更新
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282次组卷
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2卷引用:四川省遂宁市2021-2022学年高一上学期期末数学试题