解题方法
1 . 设函数
.
(1)当
时,求不等式
的解集;
(2)当
时,函数
的最小值为
,正实数
满足
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f2ae91c9d052de0199858fdf5ddc49.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0abe4960954bb3144b7e86d4233e747.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a475fec8ded321e10a6697319fb975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f7ff8bc9092ec22c2c0c98eabbefbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca1766911784706d740ccc1276e2c72.png)
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2023-02-03更新
|
87次组卷
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2卷引用:河南省三门峡市2022-2023学年高三上学期第一次大练习(期末)数学(文科)试题
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2 . 已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/488bb59591e1d4ab1b606666edf87f84.png)
(1)当
时,求不等式
的解集;
(2)若不等式
的解集包含
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c32f6ecd5ec87b309611bcf7e623aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/488bb59591e1d4ab1b606666edf87f84.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b624d88827e92e12bc0a8f1067cbe72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447d6f62c09c1d05346fd16a24159f6e.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa18838a13fda4e45612c32cdf98b71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7242b2ab643f9470da77e29d043b893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-02-01更新
|
511次组卷
|
6卷引用:2020届河南省三门峡市高三上学期第一次大练习(期末)数学(理)试题
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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大于
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cd332606dc494b6d01da57f3a65ca6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5f421939ee855f25927e7570d82c71.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c2e0bb6d63b7bcaee92a470d58cc399.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/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2019-11-14更新
|
273次组卷
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7卷引用:河南省三门峡市2020-2021学年度高三第一次大练习数学(理科)试题
(已下线)河南省三门峡市2020-2021学年度高三第一次大练习数学(理科)试题山东省烟台市2018届高三下学期高考诊断性测试数学(理)试题山东省烟台市2018届高三下学期高考诊断性测试数学(文)试题(已下线)上海华东师范大学第二附属中学2019届高三数学考试试卷(10月)四川省绵阳市涪城区南山中学2019-2020学年高三上学期11月月考数学(文)试题四川省绵阳市涪城区南山中学2019-2020学年高三上学期11月月考数学(理)试题上海市松江一中2022届高三下学期3月阶段测试数学试题
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4 . 选修4-5:不等式选讲
已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0907947a93832ab4df3bb8e85d357222.png)
.
(I)当
时,求不等式
的解集;
(II)设关于
的不等式
的解集为
,且
,求实数
的取值范围.
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0907947a93832ab4df3bb8e85d357222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f79b8690c922e042e422cda331fbdfc.png)
(I)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aed39f5aca78934fb383402433fe549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d24227741bf427e6bd73490baf3c3d6.png)
(II)设关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e629b11a715a3aa0e1fc956682d231d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/627580c8d2511ba605de6ceb6b516824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2017-11-16更新
|
460次组卷
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2卷引用:河南省三门峡市2018届高三上学期期末考试数学(理)试题
5 . 选修4-5:不等式选讲
已知
,
.
(1)求证:
,
;
(2)若
,求证:
.
已知
![](https://img.xkw.com/dksih/QBM/2012/2/1/1570708868751360/1570708874444800/STEM/cfdbbadcf2234fd2a5daf36f6d8e2319.png)
![](https://img.xkw.com/dksih/QBM/2012/2/1/1570708868751360/1570708874444800/STEM/977e335a06c941e185616a2cdb67aa13.png)
(1)求证:
![](https://img.xkw.com/dksih/QBM/2012/2/1/1570708868751360/1570708874444800/STEM/447a503c796c4609a3b8c0e7a718a31f.png)
![](https://img.xkw.com/dksih/QBM/2012/2/1/1570708868751360/1570708874444800/STEM/9f26845818034ac794bbef69c5efe228.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2012/2/1/1570708868751360/1570708874444800/STEM/6e0239208ba54809b4bb6a02b093073a.png)
![](https://img.xkw.com/dksih/QBM/2012/2/1/1570708868751360/1570708874444800/STEM/69c5805719d641bc890fe468068f0dda.png)
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