已知函数f(x)是定义在R上的奇函数,且当x≤0时,f(x)=x2+2x.
![](https://img.xkw.com/dksih/QBM/2019/1/8/2114189271760896/2115174370729984/STEM/bb34c31c054f432d9ee4a50926f6786b.png?resizew=290)
(1)现已画出函数f(x)在y轴左侧的图象,如图所示,请补全函数f(x)的图象;
(2)求出函数f(x)(x>0)的解析式;
(3)若方程f(x)=a恰有3个不同的解,求a的取值范围.
![](https://img.xkw.com/dksih/QBM/2019/1/8/2114189271760896/2115174370729984/STEM/bb34c31c054f432d9ee4a50926f6786b.png?resizew=290)
(1)现已画出函数f(x)在y轴左侧的图象,如图所示,请补全函数f(x)的图象;
(2)求出函数f(x)(x>0)的解析式;
(3)若方程f(x)=a恰有3个不同的解,求a的取值范围.
18-19高一上·河南驻马店·期中 查看更多[9]
湖南省株洲市第二中学2021-2022学年高一上学期期中数学试题青海省海南藏族自治州高级中学2022-2023学年高三上学期10月月考数学(理)试题湖南省邵阳市第二中学2021-2022学年高一上学期期中数学试题(已下线)第三章 函数的概念和性质(章末测试)-【上好课】2021-2022学年高一数学同步备课系列(人教A版2019必修第一册)(已下线)练习3+函数的概念与性质-2020-2021学年【补习教材·寒假作业】高一数学(人教A版2019)河南省淮阳县陈州高级中学2019-2020学年高一上学期期中考试数学试题河南省郑州市106中学2019-2020学年高一上学期9月月考数学试题人教A版(2019) 必修第一册 突围者 第三章 3.2课时3 奇偶性【市级联考】河南省驻马店市2018-2019学年高一上学期期中考试数学试卷
更新时间:2019-01-09 19:56:11
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解答题-问答题
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名校
解题方法
【推荐1】已知函数
是定义在R上的奇函数,当
时,
.
(Ⅰ)求函数
在R上的解析式;
(Ⅱ)若
,函数
,是否存在实数m使得
的最小值为
,若存在,求m的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69c13a09123ae873e0b0501aaecc507e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9529bc72d1b9e5d1eb1996785a0b8483.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86099e804d5105c9b5a2b1b2ad407f5e.png)
(Ⅰ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69c13a09123ae873e0b0501aaecc507e.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc2ffdaaf2306fb0279a97a931022fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb718886f7b401c83a62b7468844f59e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae8df65891fe8c9b97164880b7f331f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10402e4ddd0d323cc1ae83801ae976db.png)
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【推荐2】已知函数
是定义在
上的奇函数.
(1)求
的值及方程
的解;
(2)当
时,求函数
的最大值与最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49a7b607c855c8f289c9fa376a79d5bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb381ac86308c6249bc7e8737cdc668d.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790daaa89fc9d093f45023becf765697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6612612fc6ac4a8b0d000e9140333750.png)
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解答题-作图题
|
较难
(0.4)
【推荐1】对于两条平行直线
、
(
在
下方)和图象
有如下操作:将图象
在直线
下方的部分沿直线
翻折,其余部分保持不变,得到图象
;将图象
在直线
上方的部分沿直线
翻折,其余部分保持不变,得到图象
:再将图
在直线下方的部分沿直线
翻折,其余部分保持不变,得到图象
;再将图象
在直线
上方的部分沿直线
翻折,其余部分保持不变,得到图象
;以此类推…;直到图象
上所有点均在
、
之间(含
、
上)操作停止,此时称图象
为图象
关于直线
、
的“衍生图形”,线段
关于直线
、
的“衍生图形”为折线段
.
(1)直线型
平面直角坐标系中,设直线
,直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7712260b9136c187e571f2e52b07ff.png)
①令图象
为
的函数图象,则图象
的解析式为
②令图像
为
的函数图象,请你画出
和
的图象
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/8bf8f6d6-91ee-4f7e-acda-5423f6753233.png?resizew=380)
③若函数
的图象与图象
有且仅有一个交点,且交点在
轴的左侧,那么
的取值范围是_______.
④请你观察图象
并描述其单调性,直接写出结果_______.
⑤请你观察图象
并判断其奇偶性,直接写出结果_______.
⑥图象
所对应函数的零点为_______.
⑦任取图象
中横坐标
的点,那么在这个变化范围中所能取到的最高点的坐标为(_______,_______),最低点坐标为(_______,_______).
⑧若直线
与图象
有2个不同的交点,则
的取值范围是_______.
⑨根据函数图象,请你写出图象
的解析式_______.
(2)曲线型
若图象
为函数
的图象,
平面直角坐标系中,设直线
,直线
,
则我们可以很容易得到
所对应的解析式为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/70a2b9bc-043f-460f-bbc7-52b4eb8ed5f5.png?resizew=367)
①请画出
的图象,记
所对应的函数解析式为
.
②函数
的单调增区间为_______,单调减区间为_______.
③当
时候,函数
的最大值为_______,最小值为_______.
④若方程
有四个不同的实数根,则
的取值范围为_______.
(3)封闭图形型
平面直角坐标系中,设直线
,直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25081197c462bd7f03cc67c35c85593d.png)
设图象
为四边形
,其顶点坐标分别为
,
,
,
,四边形
关于直线
、
的“衍生图形”为
.
①
的周长为_______.
②若直线
平分
的周长,则
_______.
③将
沿右上方
方向平移
个单位,则平移过程中
所扫过的面积为_______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a12119eba9da5c32568de5832ff04c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16365b04bc8aa6787782e0aef019342d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47341a477c35b3044c5519ea8404494d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47341a477c35b3044c5519ea8404494d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc6caaae3d88eaf009ae496d2788134.png)
(1)直线型
平面直角坐标系中,设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65ba5c616b58eb33dbd5a2690f003f8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7712260b9136c187e571f2e52b07ff.png)
①令图象
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e44284cb19805a584880a686ac3df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011ae6cb0cf49f6d3d19b485dc1cfc22.png)
②令图像
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e44284cb19805a584880a686ac3df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011ae6cb0cf49f6d3d19b485dc1cfc22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fda993d38532293724009685288b72.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/8bf8f6d6-91ee-4f7e-acda-5423f6753233.png?resizew=380)
③若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76ba1c1cef5f0e6efdca5e436122412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011ae6cb0cf49f6d3d19b485dc1cfc22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
④请你观察图象
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fda993d38532293724009685288b72.png)
⑤请你观察图象
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fda993d38532293724009685288b72.png)
⑥图象
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fda993d38532293724009685288b72.png)
⑦任取图象
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fda993d38532293724009685288b72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56628de19272fbf3803dfa8d617ba779.png)
⑧若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50683751e9dcd7b55555b53785f61a0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fda993d38532293724009685288b72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
⑨根据函数图象,请你写出图象
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fda993d38532293724009685288b72.png)
(2)曲线型
若图象
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c962d7485825381801f1ebf56a37ec.png)
平面直角坐标系中,设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65ba5c616b58eb33dbd5a2690f003f8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7712260b9136c187e571f2e52b07ff.png)
则我们可以很容易得到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011ae6cb0cf49f6d3d19b485dc1cfc22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cffe34fde5a4f8ed96b1394acad8b4c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/70a2b9bc-043f-460f-bbc7-52b4eb8ed5f5.png?resizew=367)
①请画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011ae6cb0cf49f6d3d19b485dc1cfc22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011ae6cb0cf49f6d3d19b485dc1cfc22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bffc9c4bf9de4d804885955aff039ca.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bffc9c4bf9de4d804885955aff039ca.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8160ade472b89421f8009fd0cd3926a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bffc9c4bf9de4d804885955aff039ca.png)
④若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a99d3ec153c1dd00d0185bc14b4f56b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)封闭图形型
平面直角坐标系中,设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239ea6e5fa7672c43a45ebb4c3757370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25081197c462bd7f03cc67c35c85593d.png)
设图象
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b978a095d4bac4da3a807575d9b35e8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b62194097ac66a5093c57fca2f5b4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/847fea08d7cb36942bd5028b2cb7707e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae4febd9d6318cb2cfd23ac9dd2922e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c2c5dbea60dd70fbbeb390c094859cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b978a095d4bac4da3a807575d9b35e8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f2813ee8f26cca880b6427f5f545d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47341a477c35b3044c5519ea8404494d.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47341a477c35b3044c5519ea8404494d.png)
②若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a806c58799f9bac6c601aee7aad5bb8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47341a477c35b3044c5519ea8404494d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
③将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47341a477c35b3044c5519ea8404494d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47341a477c35b3044c5519ea8404494d.png)
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解答题-问答题
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较难
(0.4)
名校
【推荐2】如图所示,在平面直角坐标系
上放置一个边长为1的正方形
,此正方形
沿
轴滚动(向左或者向右均可),滚动开始时,点
在原点处,例如:向右滚动时,点
的轨迹起初时以点
为圆心,1为半径的
圆弧,然后以点
与
轴交点为圆心,
长度为半径……,设点
的纵坐标与横坐标的函数关系式是
,该函数相邻两个零点之间的距离为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/01c11601-f807-45b7-9968-d034000446c4.png?resizew=174)
(1)写出
的值,并求出当
时,点
轨迹与
轴所围成的图形的面积
,研究该函数的性质并填写下面的表格:
(2)已知方程
在区间
上有11个根,求实数
的取值范围
(3)写出函数
的表达式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a351136b18bc7d3bd5122332772ab23b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a351136b18bc7d3bd5122332772ab23b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6ff81aedbefa935da289dc632e78eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d38feaa3d6708194d17be61f993416.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/01c11601-f807-45b7-9968-d034000446c4.png?resizew=174)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4085d75226508993c77be579fdf449b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
函数性质 | 结论 | |
奇偶性 | ||
单调性 | 递增区间 | |
递减区间 | ||
零点 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667a6aedacb7d0f9865a42f8415e96ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd82e1bc45770fab82beca3190b05c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a79e9ca588a4eb635c7df03024f3fb6.png)
您最近半年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐1】已知
.
(1)解不等式
;
(2)设
,是否存在实数
,使得函数
存在两个零点
、
,且满足
.若存在,求出实数
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a73b2bbe9a3f02397ac663ac884f29be.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b61adc4745f283e4072ddd762f92ffe.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8ee3e431ff571817081dc9fcc655b7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec001a5db560355edd2c6ed5fdbb714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近半年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐2】已知函数
.
(1)若
,判断
在区间
上是否存在极小值点,并说明理由;
(2)已知
,设函数
.若
在区间
上存在零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f171cb91c4b51ebb757667b1dc02a6f5.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8493a0cd10d3d0399173c04163740a38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/817e749f1ba9305c4244ce1889c6230c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近半年使用:0次