解题方法
1 . 已知定义域为
的函数
是奇函数.
(1)求
,
的值;
(2)已知
在定义域上是增函数,解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ab84545ef7cef684c4fff2984131ed.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4efa6ca96748c6491a70f1f9fcba3f93.png)
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解题方法
2 . 已知函数
(a,b∈R).
(1)若关于x的不等式
的解集为(-1,3),求a+b的值;
(2)若b=-a-5,解关于x的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/488a3f633c3b36d19dba701d50dd061b.png)
(1)若关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
(2)若b=-a-5,解关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c16ff3842dd9308e7236b01704bb6c8.png)
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3 . 已知函数
.
(Ⅰ)关于
的不等式
的解集为
,求
在区间
,
的最小值;
(Ⅱ)解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82c322f7203a7fbd3ebf95b035f83fd7.png)
(Ⅰ)关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b6d39251c07d92914352c39669f976f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e82cc461b9607e08a8b31597f6d26df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b56998843f305bf2fa016973a975470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4caee21c29aa2410ea04b3fc2d80cd.png)
(Ⅱ)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8ae68c1bde46a7af8b52235472a9a05.png)
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2020-11-28更新
|
297次组卷
|
2卷引用:黑龙江省哈师大附中2020-2021学年高一(上)期中数学试题
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解题方法
4 . 解关于
的不等式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f1d59066e8a371a1b301dc12762bcbe.png)
(1)若
,
恒成立,求
的取值范围;
(2)若
,解上述关于
的不等式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f1d59066e8a371a1b301dc12762bcbe.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987710e8b3fe7dd89e78d7591f021064.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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解题方法
5 . 已知函数
.
(1)当
时,求函数
的零点;
(2)解关于
的不等式
;
(3)当
时,函数
在
有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad7d90f2a8767e911ebf38d2ab81306f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afff4439d55a888779a2c58482bf2dce.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67b94d9f8dc25106dac1b77ae8181ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30a5498bb0236a2bb04ae38329b408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2020-11-24更新
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386次组卷
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2卷引用:江苏省盐城一中、射阳中学等五校2020-2021学年高一(上)期中数学试题
6 . 已知数列
是等差数列,数列
是等比数列,且满足
.
(1)求数列
与
的通项公式;
(2)设数列
,
的前
项相分别为
,
.
①是否存在正整数
.使得
成立?若存在,求出
的值,若不存在,请说明理由;
②解关于
的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d9d7a912daad7a539bf0e166e10a503.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
①是否存在正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0ddc173b72a20a6cc395db755c87918.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
②解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db81fb85f7a5dd6253aa6f158c8b3517.png)
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解题方法
7 . 已知函数
.
(1)当
时,求
在区间
上的值域;
(2)若函数
在区间
上是减函数,求
的取值范围;
(3)解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e25d72d7827273e77f2b6d94a4b8d7c1.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23c33b69adc112831fa115b5dffdb616.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75c3204dcb6b697db534514558111f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
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2020-11-20更新
|
289次组卷
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2卷引用:北京市第四十三中学2020-2021学年高一上学期期中考试数学试题
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8 . 已知数列
满足
,且
,数列
满足
,且
,(
).
(1)求证:数列
是等差数列,并求通项
;
(2)解关于
的不等式:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588e4f939835eeb5feefdb5d37c921e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/debb8f9f0353c63c9267e02a22181df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385275d29d8c8a7841eaeaa3dfab2cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a44cfbb86a4eb76261c00ddc6bff181.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c6616e86045b2d34207492dd69ecf32.png)
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2020-11-19更新
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375次组卷
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4卷引用:江苏省盐城市一中、射阳中学等五校2020-2021学年高二上学期期中联考数学试题
名校
9 . 已知函数
,在区间
上有最大值4,有最小值1,设
.
(1)求
的值;
(2)不等式
在
时恒成立,求实数
的取值范围;
(3)若方
程有三个不同的实数解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db41c825922543b55f7723f7aa2aa431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a248e47163191168a1b363937eebd618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba94b35258a2fbde34d7e26be524fb6e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad6dcb59f838211c30c4a72ad6cd3862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d426f7a8843676be58d9977bebe01f45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)若方
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11799bbb06965250cc1e0b53460f3242.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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10 . 已知函数
,且
的解集为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1ec3528a60d8ee804dd83a037ad7cf.png)
(1)求函数
的解析式
(2)解关于x的不等式
(其中
)
(3)设
,若对任意的
,都有
,求t得取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d0ae9f5fe3036e7e5ef4341e2bad4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1ec3528a60d8ee804dd83a037ad7cf.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)解关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bacd4b22ac50b0460b6e0974fc8c7f13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be466586da8810ccfd811c59a747adb8.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e36b353721015be42ac1ece1684f1c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/736791fd289ee1b29b7622e05c405e52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0e040564ffbd71163bbc4218cd6660a.png)
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