解题方法
1 . 已知
,
.
(1)当
时,求证:
;
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348c03718d4bcb96483463c108bd0f8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46db6175bcd2b377786d35b4bc01e799.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26c5dc965a01e994094700d47ed1675d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65de0c6b3ca8d1326a5225b93d9e38da.png)
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2020-06-05更新
|
311次组卷
|
2卷引用:福建省福州市2020届高三毕业班第三次质量检查数学(文科)试题
解题方法
2 . 已知函数
.
(1)判断函数
的奇偶性;
(2)判断函数
的单调性(不必证明);
(3)若不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb402b4847c5bc1caec9ff83958d06c.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9538ec6f8e471f91a50785dc38eeadab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
名校
解题方法
3 . 已知
,
,
.
(1)求证:
;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a20c68526fa976a221ce80c385b4d44f.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8564d76ca5357c0f6237e48086d23f75.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8845c0d06613fabb0358d5392cca38b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7b3ec736096bdc7523763da1ecc1cc3.png)
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2020-03-24更新
|
617次组卷
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5卷引用:2020届福建省漳州市高三3月第二次高考适应性测试数学(理)试题
2020届福建省漳州市高三3月第二次高考适应性测试数学(理)试题2020届福建省漳州市高三毕业班第二次高考适应性测试数学(文)试题重庆市第一中学2019-2020学年高三下学期期中数学(文)试题四川省绵阳南山中学实验学校2020届高三(高中2017级)五月月考数学(理科)试题(已下线)专题2.2 基本不等式及其应用(精练)-2021年新高考数学一轮复习学与练
4 . 已知函数
.
(1)当
,解不等式
;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/160b7cc0a1ea3761ffbfa5a44bdb34c2.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/256f3981024e53f373a80aad40e994ae.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be8d47e6ad43be0668f805d1cc324093.png)
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5 . 已知函数
.
(1)求
的最小正周期;
(2)将函数
的所有正的零点按从小到大依次排成一列,得到数列
,令
,
为数列
的前
项和,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b4d368bfda0e26c544d1d7961e830a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2468acdf268b35253bf29707aafda833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f63b998f4909841e47575281936b3f55.png)
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2020-04-22更新
|
787次组卷
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2卷引用:福建省漳州市南平市2019-2020学年高三第二次教学质量检测文科数学试题
名校
解题方法
6 . 已知
,
为正实数,
.
(1)证明:
.
(2)证明:
.
![](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/89dc8118d95d6c7bd5b7d38667a498e8.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b0e403c5f00d0357d3fa30d6c2717c.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f7be6702a18be19bf4f7f1d544c2b6.png)
您最近一年使用:0次
2020-04-24更新
|
583次组卷
|
5卷引用:2020届全国100所名校最新高考模拟示范卷高三模拟测试理科数学(二)
2020届全国100所名校最新高考模拟示范卷高三模拟测试理科数学(二)2020届全国100所名校最新高考模拟示范卷高三理科数学模拟测试试题(二)2020届全国100所名校最新高考模拟示范卷高三数学文科卷(二)甘肃省兰大附中2020届高三5月月考数学(理科)试题(已下线)五省(适用于河北重庆广东福建湖南)2021届高三解题能力数学试题
名校
7 . 设函数
(
)的最小值为
.
(1)求
的值;
(2)若
,
,
为正实数,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57530a487367697c920f4bb2df591599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](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/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/861ec3a6c3c6fd17393f625d32940dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80656b731580035f2d5f137a0a97cbb7.png)
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2020-03-28更新
|
883次组卷
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9卷引用:2020届福建连城县第一中学高三4月模拟考试数学(文)试题
8 . 已知
.
(1)求证:
;
(2)若
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077a31bd2b8e26c35bfd855e42b5d7a9.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1862e609668e42e0cd6f753c178eeea9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d499e8ca8a0c2c810507e34456181577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ca64e2ff48c3562312ebc331a4790d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d93c567736dc0f56e0da4101e298352.png)
您最近一年使用:0次
2019-09-20更新
|
785次组卷
|
6卷引用:福建省三明市2019-2020学年普通高中高三毕业班质量检查A卷(5月联考)理科数学试题
2010·福建厦门·一模
名校
9 . 已知
=(cosx+sinx,sinx),
=(cosx-sinx,2cosx),
(Ⅰ)求证:向量
与向量
不可能平行;(Ⅱ)若f(x)=
·,且x∈
时,求函数f(x)的最大值及最小值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
(Ⅰ)求证:向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b0fe4d834e8eaca89ceaf9c64cdabd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecf86aec950d4106b96b811129180a5.png)
![](https://img.xkw.com/dksih/QBM/2010/6/19/1569764562173952/1569764567449600/STEM/6a88350ba6ed4294b861afa75163560e.png?resizew=4)
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