解题方法
1 . 已知函数
.
(1)当
时,求不等式
的解集;
(2)若不等式
对
恒成立,求实数a的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995e2474f312e53340f0570178a26008.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af7e5cd65bc9d3051c2c72311ca8f88d.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed408d3a43e0c6f6939b87346ea308c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb099907c15816b4b329715e80aea70f.png)
您最近一年使用:0次
名校
解题方法
2 . 已知函数
.
(1)求不等式
的解集;
(2)若
,
,且
,求满足条件的整数
的所有取值的和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1e7557f89eb2c438cdea7fa97eb6551.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f501d134a31e3988e14d671605787648.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fde28188ddd8e0e44d6bef6b40ced2d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e15c2171c1be9ec394494ad822a048d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7db3272da23cb2de0aa20fbd07af26ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023-01-06更新
|
467次组卷
|
5卷引用:慕华优策联考2022-2023学年高三第一次联考理科数学试题
3 . 已知函数
.
(1)若不等式
的解集为
,求
的值;
(2)若关于
的不等式
有解,求
的取位范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8327be2dd861aba12773e281c6f3582.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4aa539556add14df9b3fc68b9827464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a001b721510e3c4ae08c60f67854f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0053ded22e66e1d899ad8a268828e8ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2021-03-23更新
|
367次组卷
|
2卷引用:河南省金太阳2021届高三下学期3月联考(I卷)理数试题
解题方法
4 . 已知
.
(1)若
.关于
的不等式
的解集包含区间
,求
的范围;
(2)若
的最小值为5,且
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fd20f8454292a973dbfaa9e94cb0311.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2677d8cb044df55cbca3c905c286a952.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1756b564bf1d998d8179637011c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14a0d5dc7533a26efbe6d75f9712b582.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/175d0c99e866f1db915462a91b356ef3.png)
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5 . 已知函数
.
(1)求不等式
的解集;
(2)若
的图象与直线
围成的图象面积不小于24,求
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6750744fbdea56d71f031b209b2056de.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13e272244a751ca0c3f96beaafb426dc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46111e4d12c21798aa213c0d7804c2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
6 . 已知函数
,
.
(1)当
时,求不等式
的解集;
(2)若
,不等式
恒成立,求实数a的取值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f25c40746d9b2ed9b8e486307fd2780f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7cc2aa5c5d4040c66e6794e71f48647.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c2e0bb6d63b7bcaee92a470d58cc399.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2052130268c701b5bc83f51dfe09958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa18838a13fda4e45612c32cdf98b71.png)
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7 . 选修4—5:不等式选讲
设不等式
的解集为
, 且
.
(Ⅰ) 试比较
与
的大小;
(Ⅱ) 设
表示数集
中的最大数, 且
, 求
的范围.
设不等式
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/73509d50fff34c21bbee1942a82be296.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/461d97b1c53d44f5a508cabeea525c1c.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/2e891618a7e04d92b63e244f34fdeb64.png)
(Ⅰ) 试比较
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/d7710fcc9dc84eb1adfe2d7d41e9cd17.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/897a5b3ec5a04a70b715776bbb5190c2.png)
(Ⅱ) 设
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/273d4c84d04648d8ba6f6f39695c5bbd.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/1f8c4b4d87a0411db1b5a18b36e1e956.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/88a032c8f9824b7aa8e1962dab27211f.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/a95bedf3cc9940e0befb881c08e0866d.png)
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名校
8 . 设不等式
的解集为
,且
.
(1)试比较
与
的大小;
(2)设
表示数集
中的最大数,且
,求
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9942656b065269633af3859d6106b3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5fcab2d899b5dfb8d8230e0f84fd5f3.png)
(1)试比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdaba8b1591046933f2f725b6b1bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74dec63e6d30a41fcc8972397875bf46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fde9b9777705297bd121a2701390ecbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
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2016-12-04更新
|
281次组卷
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3卷引用:2017届湖南长沙长郡中学高三摸底测试数学(文)试就
名校
解题方法
9 . 已知集合
.
(Ⅰ)若存在
使不等式
成立,求
的取值范围;
(Ⅱ)取
为(Ⅰ)所求范围中的最小正整数,解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41f431f45011940ec55205d8865b701.png)
(Ⅰ)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dbd1829913e96434a449880e523f804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(Ⅱ)取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb37562ba298e7243e61995a58947d0.png)
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2020-09-26更新
|
108次组卷
|
4卷引用:河南省2020-2021学年上学期高中毕业班阶段性测试(一)理科数学试题
解题方法
10 . 已知函数
.
(1)求不等式
恒成立,求
的范围;
(2)若
,且对
,总存在
,使得
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/746d2eafde8d0c20e74e1f805aee7eea.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369100ccd44feaa77e5f119ea949a879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bb1e7475dd989f4a692bfc8b206b107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a388b0d122d08d0211d818df53aba3b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ba8542fbe02e78cf3948c9abea9855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e63bbadc6250f7139836ede33205550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-05-01更新
|
139次组卷
|
2卷引用:重庆市江津中学、綦江中学等六校2019-2020学年高三下学期4月复学联合诊断性考试数学(理)试题