1 . 已知不等式
的解集为(1,t),记函数
.
(1)求证:函数y=f(x)必有两个不同的零点;
(2)若函数y=f(x)的两个零点分别为
,
,试将
表示成以
为自变量的函数,并求
的取值范围;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5f28031b036e4a37be931d5ff28368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e5ddb6547c568811b4f4546126542c.png)
(1)求证:函数y=f(x)必有两个不同的零点;
(2)若函数y=f(x)的两个零点分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e6e3d7843c3fc910405650ea4fbbe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e6e3d7843c3fc910405650ea4fbbe3.png)
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名校
2 . 已知a∈R,f(x)=log2(1+ax).
(1)求f(x2)的值域;
(2)若关于x的方程f(x)-log2[(a-4)x2+(2a-5)x]=0的解集恰有一个元素,求实数a的取值范围;
(3)当a>0时,对任意的t∈(
,+∞),f(x2)在[t,t+1]的最大值与最小值的差不超过4,求a的取值范围.
(1)求f(x2)的值域;
(2)若关于x的方程f(x)-log2[(a-4)x2+(2a-5)x]=0的解集恰有一个元素,求实数a的取值范围;
(3)当a>0时,对任意的t∈(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
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12-13高一下·重庆·期末
名校
3 . 已知函数f(x)是二次函数,不等式f(x)≥0的解集为{x|﹣2≤x≤3},且f(x)在区间[﹣1,1]上的最小值是4.
(1)求f(x)的解析式;
(2)设g(x)=x+5﹣f(x),若对任意的
,
均成立,求实数m的取值范围.
(1)求f(x)的解析式;
(2)设g(x)=x+5﹣f(x),若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb813def8d3f15fcd8b41cdf17261bfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df67523fed9f2960e00d17713f8bf5f7.png)
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2018-10-14更新
|
1429次组卷
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5卷引用:2012-2013学年重庆一中高一下学期期末考试数学试卷
名校
4 . 已知函数
,不等式
的解集为
.
(Ⅰ)若
,求
;
(Ⅱ)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cda1844d471f17e3c6c992d4c38f0fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f718e1f15a61ac3721bdc7acc00b28f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9af6b8933cb0bcc983a15c903b5892e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f15c02436e05c15b3419dec8802c904f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2018-12-08更新
|
932次组卷
|
2卷引用:【全国百强校】广西壮族自治区桂林市第十八中学2018-2019学年高一上学期期中考试数学试题
名校
5 . 已知
为常数,函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73cc4579ea425a11b23777c98905d051.png)
(1)求关于
的不等式
的解集.
(2)若函数
有两个不同的零点,求实数
的取值范围.
(3)对于任意的
,且
,证明:关于
的方程
在区间
内有且仅有一个实根.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69c65e52790ea1b81aee39b201448117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73cc4579ea425a11b23777c98905d051.png)
(1)求关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a770ac2fd7c89575080925000453b7b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d200a7afe1e011713e14886a6887e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a78288f56f67c4f126209f9d2ee76a3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a95496c9d918148f5d86a6d48a136b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f803a468e5d66004e57372a5bf2c5e1b.png)
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名校
6 . 已知不等式
的解集为
,函数
的值域为
.
(1)求
;
(2)若
,且
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b6ec825b0bf99d6b0a89e7af6615b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc4c32e99d75f8800db6748f78e9c87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbeca7a33e4f6dfbe73a277c38d4b195.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4490763d35a7231a5ea19f79653e6e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e968937d457d9e2237b401077ff224a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2018-12-03更新
|
365次组卷
|
3卷引用:【市级联考】河北省定州市2018-2019学年高一上学期期中考试数学试题
名校
7 . 已知函数
.
(1)若
,求不等式
的解集;
(2)若
的定义域为
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6c3e1cd809487ffd4bff5a3b1a1dab.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/872e2b512077eeda6b0e330dde1fa1f8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2018-11-18更新
|
992次组卷
|
2卷引用:浙江省衢州四校2018学年第一学期高一期中考试数学试卷
名校
8 . 已知:关于x的不等式(mx-(m+1))(x-2)>0(m
R)的解集为集合P
(I)当m>0时,求集合P;
(II)若{
}
P,求m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02d44492b51b0e08208fdc0d1707025.png)
(I)当m>0时,求集合P;
(II)若{
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d469ee1e43f36c8702dff1e81a6ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b980d8446f130dfc405c196109e73ea4.png)
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9 . 定义区间
、
、
、
的长度均为
,已知不等式
的解集为
.
(1)求
的长度;
(2)函数
(
,
)的定义域与值域都是
(
),求区间
的最大长度;
(3)关于
的不等式
的解集为
,若
的长度为6,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64d924836b4292239d9726c6473d7f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969840165f6bf948e1131946ce952bc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fddf1934a380262914e7a9cbb80f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64da75a02173c2a5eb40f4c68d0f4f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/412ee05800715ccb5afd95bb1be4e713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f0caa3a615699327816753132a064e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eae51f0310b87cde2e206643e9d25a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
(3)关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f20ec9811eca52d5d4177a3c93002d1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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10 . 已知定义域为
的函数
是奇函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe06b774101d49edab101585bde468a9.png)
(1)求的值;
(2)判断函数的单调性并证明;
(3)若关于的不等式
的解集为
,求
的取值范围.
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2018-11-06更新
|
633次组卷
|
2卷引用:四川省蓉城名校联盟2018-2019学年高一上学期期中联考数学试题