1 . 选修4-5:不等式选讲
已知函数
(
).
(1)当
时,求不等式
的解集;
(2)若不等式
对任意实数
恒成立,求
的取值范围.
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca3737f7abc9de7373db1e798ad1168.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0dd18467feea8eb478f4669a32c2d57.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b45f8224a638bb503ccb01749cfeb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
2 . 已知函数
.
(Ⅰ)解不等式
;
(Ⅱ)
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccb53e246cd4c5eae6816a6d5bb7361.png)
(Ⅰ)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74dbd58b21a94cf93f4623c07452b102.png)
(Ⅱ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee0f3862c8567634ba610ff9f2109b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 设函数
,
.
(1)若
,求不等式
的解集;
(2)若关于
的不等式
对任意的
恒有解,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c43ff2ad14044566dc9f4d92744dfdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980a8c4eb822aeb591ceacfe8a7aaa11.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35061ce07c6c4c3537f7b9934ba682d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/093e644f5a394599d628cf520ed25988.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e5cd591c78309eb0642ae1a77e77b5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ebfef550eec07598671c5929259780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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10-11高三上·重庆万州·阶段练习
名校
4 . 如果
,那么下列不等式中正确的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1af02ba4881e184a8f753bbed7a472.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2010-12-24更新
|
362次组卷
|
3卷引用:福建省三明市普通高中2016-2017学年高二下学期期末质量检测文数试题
福建省三明市普通高中2016-2017学年高二下学期期末质量检测文数试题(已下线)2011届重庆市万州二中高三12月月考理科数学卷浙江省绍兴市诸暨中学2018-2019学年高二(平行班)上学期10月阶段性考试数学试题
5 . 已知函数f(x)=|x﹣a|+2a,且不等式f(x)≤4的解集为{x|﹣1≤x≤3}.
(1)求实数a的值.
(2)若存在实数x0,使f(x0)≤5m2+m﹣f(﹣x0)成立,求实数m的取值范围.
(1)求实数a的值.
(2)若存在实数x0,使f(x0)≤5m2+m﹣f(﹣x0)成立,求实数m的取值范围.
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名校
6 . (1)关于
的不等式
的解集不是空集,求
的取值范围;
(2)设
,
,
,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7b28f8a204c61ca2634aac8fe2a6867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70cecfc37310dd869b0d51ff44d64e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61275572804e55a37cc7542df3b0cd72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1433c8103033c67232f2f9ae189608d.png)
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7 . 已知函数
.
(1)解不等式
;
(2)设函数
,若存在
,使
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b579f06fb171212d46ff13b34c799cbc.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e312bdf3b4a2b326342cabc28ee7f09.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f70cf03326713d527ec57699090cf63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5e6639114ec2cfb4b928c9187aa59a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56a19a46f3541e322015400bfe5d9195.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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8 . (A)在直角坐标系
中,以坐标原点为极点,
轴的正半轴为极轴建立极坐标系,曲线
的参数方程为
(
为参数),
是曲线
上的动点,
为线段
的中点,设点
的轨迹为曲线
.
(1)求
的坐标方程;
(2)若射线
与曲线
异于极点的交点为
,与曲线
异于极点的交点为
,求
.
(B)设函数
.
(1)当
时,求不等式
的解集;
(2)对任意
,
不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2beb91f10d2d8f2aa0dcc3f5cd1598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb6101e45f8d7013bc3dc4197188c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e8b55c753e95a518ff6f4c7181b39e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb6101e45f8d7013bc3dc4197188c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0101a7b5c8a4aed0de2af363792e39a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acfc9319b4dfcefd8f0bb0338f7cbf2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acfc9319b4dfcefd8f0bb0338f7cbf2.png)
(2)若射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4a58e738332d7b5eddc22563fa9358e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb6101e45f8d7013bc3dc4197188c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acfc9319b4dfcefd8f0bb0338f7cbf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36b353993900a5059dfaabe85314209.png)
(B)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7808eef0ee3943ba9046209c180c8286.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302337058242c7b78e3eb4ac7210b7ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ad5d3f1749429a1c3f5643a1676d78f.png)
(2)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4a6aa7691829211e994e53066546bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05f1a3feca6218955446108ebad0a524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9226194ffc73db12a01cd84d29ea631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
9 . 已知函数
,
.
(1)当
时,求关于
的不等式
的解集;
(2)当
时,
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0ef411a42f97f7dc52469ebd04aa93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b45f8224a638bb503ccb01749cfeb1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc2b4ee41c70d8d7b3766b52b0ab4bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2017-05-16更新
|
323次组卷
|
3卷引用:福建省三明市2017届普通高中高三毕业班5月质量检查数学(文)试题
解题方法
10 . 已知函数
,
.
(1)当
时,求关于
的不等式
的解集;
(2)当
时,
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3c240779842e455cccf5a6009462e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fbc901cbdb68130ddac3174583dd93c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0d11e9877ec4a31c43387d1116f6d4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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