已知
,其中
为常数.
(1)若
的解集为
或
,求
的值;
(2)
使
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfbed9ecf51f09ea92660e1cae40bc15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85187c85826beeca12137805293fff77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82943c267860fa966ae82ac960df6f90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac3e627026a67df982843808f5115d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c30b1591ed623568f4c0e79fd809c98a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032e8dc00cdc96860c9cbf8ac09677fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
22-23高一上·辽宁铁岭·阶段练习 查看更多[3]
更新时间:2022-10-29 18:13:29
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适中
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解题方法
【推荐1】若二次函数
的最小值为
,且
.
(1)求
的解析式;
(2)当
时,
,求实数
的取值范围;
(3)求函数
在区间
上的最大值
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0579bb9702e9c8dee3735f1fb075ba1f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d18aca0e7da68266cda4d4af074a3d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e07aeac5e53523b6f79ae5f54c1f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d300a3a6d3270bccac16b34fd7a3cb5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb83ad27846200a8ac81ff4cf7fd510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf64767a183515d2ebab9a295f6a580.png)
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【推荐2】已知
,
,对
,
为其最值,且关于
的方程
有两个相等的实数根.
(1)求函数
的值域;
(2)设函数
,(
且
)且
在
上的值域为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/862421cc162b428386ed1399168889c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3cb77304ba3546c1fc629832f1b811f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a32822a106d217ffdec43557a236f786.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d8b002680c476b8323c4b67e8bc999e.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b3388a8dfdaa840533ff42d5ba753ee.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3459a499973cf97901759829c14e35f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec50d2231d7ba7ca7290ac61ddbe6d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7636bee43b7ad3b654136054f0c061f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐3】在2021年的全国两会上,“碳达峰”“碳中和”被首次写入政府工作报告,也进一步成为网络热词.为了减少自身消费的碳排放,节省燃料.经多次实验得到某种型号的汽车每小时耗油量
(单位:
)与速度
(单位:
)(
)的数据关系:
.
(1)王先生购买了一辆这种型号的汽车接送孩子上学,由于城市道路拥堵,每小时只能行驶
,王先生家距离学校路程为
,王先生早上开车送孩子到学校,晚上开车接回家,求王先生每天开车接送孩子的耗油量;
(2)周末,王先生开车带全家到周边游玩,经过一段长度为
平坦的高速公路(匀速行驶),这辆车应以什么速度在这段高速公路行驶才能使总耗油量最少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee10b15238789eff8bcc496fa524cb34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc13a607ac0c7f76d252d7cb1bb040fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd9242efa2facde4d7c79ff0c1b00ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcec7326fbe0c3563460cb6c445abb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37cd2a15e7c122e5d366130560b1c7b5.png)
(1)王先生购买了一辆这种型号的汽车接送孩子上学,由于城市道路拥堵,每小时只能行驶
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34db9fc3749c3c5cd48c5e39a7717803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3005ba95c4e8d15696b5aa4d997e9e0.png)
(2)周末,王先生开车带全家到周边游玩,经过一段长度为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b684f99abd64d2a7e1fbeceedea269.png)
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【推荐1】已知
,其中a是常数.
(1)若
的解集是
,求a的值,并求不等式
的解集;
(2)若不等式
有解,且解区间的长度不超过5个单位长度,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9529ac0c7d85536cb05f5e3f5785d5aa.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12578136c1a749876bb47e6f1d69988e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
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【推荐2】已知二次函数
.
(1)若不等式
的解集为
,解不等式
;
(2)若
为偶函数,且
,当
时,函数
的最小值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/524f6a4fe8a4fadf5cdd2a0f16109646.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/881fe2df23c5a0fe1d1fecbe9ffa55fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb601ad637d40736227515407ccc535.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72b1ec158439b8c797514d254b7944c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcac1e85463a3177f487d896b3d1d24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cbaea058a5046384536a984c15878c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01317332a203c898536b1d0459f51d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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【推荐1】已知指数函数
满足:
,定义域为
的函数
是奇函数.
(1)确定
和
的解析式;
(2)判断函数
的单调性,并用定义证明;
(3)若对于任意
,都有
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3b658f1d620ce7bff583e2c57c20776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d812095771af018e0bcee3c272d0471.png)
(1)确定
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/944c02f1425e9c700c928b5a542bd04b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce9df9fd91f4447a6bed95172e48805.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8724be1c8ab87808c519cfc30aaddc1.png)
(1)若
,求
的值;
(2)讨论
在区间
上的最小值;
(3)记
在区间
上的最小值为
,若
对于
恒成立,求
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8724be1c8ab87808c519cfc30aaddc1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab9fa67c0cb9963ecfc3e5d10ae3f82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
(3)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68cc2fba0b16246825d84d41647de874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f75ff38eedfae6ebbb0d4c4183e22ef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐3】已知函数
.
(1)当
时,求
的单调区间;
(2)对
,
恒成立,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac75e553178eca6ff6f86cc34bd52017.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce2837a8732f5038a0245b69306d20d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
您最近一年使用:0次
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解题方法
【推荐1】已知函数
.
(1)若
是奇函数,求实数a的值;
(2)若
在
上是严格增函数,求实数k的取值范围;
(3)设
,若对于任意的
,总存在
,使得
或
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac486759786dadc65cd81afbbbc4aca3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb788ae88e457017bb81120b6a2e5ee.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44df0a9a86339edba3d3930f39c3a8b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5aaabe0fbbd9f4a5b29c4e7102279a0.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6293ad715a53fd2c27c6c349d119cb51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6a5b26336eff06ce06c4e44a376687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18754f7a4ad6ecc691bec3b6a064e840.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545157d6ef5efc1b8363cf5e44a9795a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30dca20a2f2d750e39abbc3b241bc6c.png)
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【推荐2】已知定义在
上的函数
(
)
(1)若
,求函数
在
上的最大值;
(2)若存在
,使得
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/349531d4b1c73be1166cbfb01abd2493.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb87c830a03204a5b783ad4c2ba49c4e.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13eb1542c4f359eac4452862aebbb31c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐3】已知函数
.
(1)求不等式
的解集;
(2)若
,
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d467942abfedbf818496110a856312f.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b45f8224a638bb503ccb01749cfeb1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373233c0a8adcd46dd16c6c99f7e1e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c0f2fcb2183cafae65b15715b58ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次