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解题方法
1 . 已知函数
是奇函数.
(1)求实数
的值及不等式的
的解集;
(2)若关于
的方程
在
上有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19c243f9b25d0c7e2e07476e26625cc6.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a37675bc1b94f13eb9a665151e9f512.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdd57f3b3bdae4376d1fe72f702990e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2 . 已知定义在
的函数
满足以下条件:
①对任意实数
,
恒有
;
②当
时,
;③
.
(1)求
,
的值;
(2)若
对任意
恒成立,求
的取值范围;
(3)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
①对任意实数
![](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/0014a18f14d6900d305793a492548912.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6000b174147cec2de26041837aec1b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/737818f97b6740bb592d0231b89a1810.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b7ea535cd56c91bece5793df4dc593d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6afeede1e920a57feb40fc0cd66b961a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78613bb379f7503151ace98c60d061bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cac239cf88c335a9d452c83de197a29.png)
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3 . 已知不等式
的解集为
,集合
.
(1)求
的值
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f70e8b92562e533fc249836020fa873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/387ed93ab3417919d161036f678136ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdcf044b3d46f8a58954d1fcb862ff4f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72850427e83ff19a24305783e080b280.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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4 . 若关于
的不等式
的解集不是空集,则实数
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ac21f1294f35281e9b2ed19bbc75f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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5 . 已知关于
的不等式
的解集是R,则实数
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2426d72fe6b3551a24af366fd25a9ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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6 . 已知函数
.
(1)关于x的一元二次方程
的两个根是
,
,当
时,求实数m的取值范围;
(2)求关于x的不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00895e815d5c2db1d7382ac113bcbf74.png)
(1)关于x的一元二次方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78bf180936707ffe41612c195ef33f53.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/39b1ef42dc8e1034dafa947ea9b640f3.png)
(2)求关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e411c8ffa0e80b3da14894bd5eed41b.png)
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2019-12-23更新
|
309次组卷
|
2卷引用:重庆市云阳县2019-2020学年高二上学期期中考试数学(文)试题
名校
7 . 函数
,若关于
的不等式
的解集为
,则当
时满足
的
的取值范围为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ad29d02e401591668b9ac9803531e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8559250e7a91f36fe7a8ec6ce6a1550f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4642c1f1c6c213cf8087222eb760965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eedfd48e5718ea98ba4e7ac434672444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
2019-12-15更新
|
252次组卷
|
2卷引用:重庆市南开中学2019-2020学年高一上学期中数学试题
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8 . 已知函数
为二次函数,
,且关于
的不等式
解集为
.
(1)求函数
的解析式;
(2)若关于
的方程
有一实根大于
,一实根小于
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9e1534b73dd957bcf8d3e44fbd0f773.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c50fb2aa5d3af41809cec25b42c463b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3432701dcc6000f25c5ea3a7937f2e7e.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577ae7344fd256ae4c8034a4c5fc83fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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9 . 对于在区间
上有意义的函数
,满足对任意的
,
,有
恒成立,则称
在
上是“友好”的,否则就称
在
上是“不友好”的,现有函数
.
(1)若函数
在区间
(
)上是“友好”的,求实数
的取值范围;
(2)若关于
的方程
的解集中有且只有一个元素,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d793368a4e898695e2e8fd7f806f0db2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9a3430b35fe4c808f4e8b10a8e812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b8d01de9b635b0936cf9b539978d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d793368a4e898695e2e8fd7f806f0db2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d793368a4e898695e2e8fd7f806f0db2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e4107a763b17ebb2b4e3271c1a41a2.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ea5c07586de4568e5be3cdecb1e9ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65735db704c976419788826815a7315.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/1e6b24b18cef83ee2db8e12d5f4053b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2018-11-15更新
|
782次组卷
|
3卷引用:重庆市第一中学校2019-2020学年高一上学期期中数学试题
名校
10 . 已知命题P:不等式
的解集为R;命题Q:圆
上至少有三个点到直线ax+y-1=0的距离为1.若命题P和Q中有且只有一个为真,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3698ae9e7e85b23e0fb785dea7e0c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a60e4163695697201215b66272ff51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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