解题方法
1 . 已知函数
,a是非零常数.
(1)若a=1,求不等式f(x)≤5的解集;
(2)若a<0,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2331e2b8a8ddd21a13648c1fb47e4c24.png)
(1)若a=1,求不等式f(x)≤5的解集;
(2)若a<0,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d4dd958d7ab5f1d9f9ed831d5782f3.png)
您最近一年使用:0次
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解题方法
2 . 已知函数
.
(1)求不等式
的解集;
(2)若
,对
,
,使
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59eefbae0aa742fadce3d76209624c31.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/335c6cb34ba1ae8efc3c9711d38b0c55.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44fd1ae9d4e47d616ac1ef89c92af09e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a388b0d122d08d0211d818df53aba3b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7898341abbbf8da0a085fa59d0887576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e63bbadc6250f7139836ede33205550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
3 . 已知函数
.
(1)求不等式
的解集;
(2)若不等式
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c39deb9574f6be3552cc4366792d12d.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66d61d5f66d68b4c4a2a25fd7103621.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c052140406ee4803ed0b864be6221df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
4 . 已知函数
.
(1)求不等式
的解集;
(2)设函数
的最小值为
,已知
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae40430099c08442eb46892d734bf2e4.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6275e2a2d4840c3d8e524ceae33e5c65.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1df37039e9be03a1ea31b91af60e6a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3539640e5344567a1071b64751cecc8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ff3847b60ab56616d0ed5e2b35a0e50.png)
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2020-05-03更新
|
490次组卷
|
6卷引用:2020届湖南省湘潭市高三下学期第三次模拟考试文科数学试题
解题方法
5 . 设函数
.
(1)解不等式
;
(2)设
,
,使得
成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4b80c0495ddfd6469c4e9bcc75484a.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2180e18416d40abb243bd23984e7aba.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39318985cea8f205c21b95c92757e62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c7a319f1fb9ef4cd6bd9eb5ab0c53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28aa4448612c61d95964c5bbedde47c6.png)
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解题方法
6 . 设函数
.
(I)当
时,解不等式
;
(Ⅱ)若
,
的图像与坐标轴的三个交点构成的三角形的面积为
,求实数a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a41c8b97d2d37f991cc9a5cd7532b463.png)
(I)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03fc1cd2baabbf8afea25478e1258237.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ed10052325390a99ad4aed16a56fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5991e9ec7666f533a528a4173c58f0ff.png)
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7 . 已知
,
.
(1)解
;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a990dc3d6cdaf2e46a6280da911820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf658da376b0f60bfb632739f63e9de5.png)
(1)解
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447d6f62c09c1d05346fd16a24159f6e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/572323f86e44407aafd61f72130576ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5140a9fa538f0220ed423e5ce89114bc.png)
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解题方法
8 . 已知函数
,不等式
的解集为
.
(1)求实数
,
的值;
(2)若
,
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbea50b9ee9088ba9c3b474a893fc52b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fb7357601b8a0ef7a5e1abdef575e53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f5c82508515eb3a880358346ea7fcae.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3de5d5e301c318bea271ae99e9b6b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb040e4be56b314424d05cd22e437b14.png)
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2020-04-24更新
|
295次组卷
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2卷引用:2020届甘肃省第一次高考诊断考试理科数学试题
9 . 已知函数
.
(1)求不等式
的解集;
(2)
、
均为正实数,若
为函数
的最小值,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb3e512a4eb1ddfdec49d7181c55caa.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/062844ed8f0949e6717bb6fd0b84fe46.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4741556c029b5811318746d837cf246.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219ba6c8a1b54598db1a78cab28d9d30.png)
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2020-04-22更新
|
181次组卷
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2卷引用:2019届百师联盟全国高三冲刺考(四)全国 I 卷数学(理)试题
10 . 已知关于
的不等式
有解.
(1)求实数
的取值范围;
(2)若正数
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c454926df353091149da8819a72f2c0.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aedb04c24d94f181ce1260ea863a9085.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac00cd08732fa9d8fc64aa0b2ebe7d1.png)
您最近一年使用:0次
2020-04-22更新
|
161次组卷
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2卷引用:2020届百师联盟高三练习题四(全国卷 II)数学(文)试题