名校
1 . 已知A,B,C为
的内角.
(1)若
,求
的取值范围;
(2)求证:
;
(3)设
,且
,
,
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdd26e94df91ca56fafabbce6c3e577b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6248aecaab8f633a0dd678685c40136b.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba934e1fd7be9f9b342066ad0fa442a.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31bb945e81369ffe14c348121e2ebbf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30e5667b41c253fe588e2996d9bea327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ffbc737f1cdb7cb3543fe2bb185f793.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b4bbc9382cc3da7c840718f66bcdcb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b72439ea2bf7b13e04599d9e4a97b84.png)
您最近一年使用:0次
2022-01-28更新
|
590次组卷
|
4卷引用:黑龙江省哈尔滨市呼兰区呼兰区第一中学校2021-2022学年高一上学期期末数学试题
黑龙江省哈尔滨市呼兰区呼兰区第一中学校2021-2022学年高一上学期期末数学试题黑龙江省哈尔滨市第三中学校2021-2022学年高一上学期期末数学试题(已下线)模块三 专题4 (三角函数)(拔高能力练)(北师大版)(已下线)第14讲 三角恒等变换、三角函数的应用(7大考点)-2022-2023学年高一数学考试满分全攻略(人教A版2019必修第一册)
名校
解题方法
2 . 设连续函数
的定义域为
,如果对于
内任意两数
,都有
,则称
为
上的凹函数;若
,则称
为凸函数.若
是区间
上的凹函数,则对任意的
,有琴生不等式
恒成立(当且仅当
时等号成立).
(1)证明:
在
上为凹函数;
(2)设
,且
,求
的最小值;
(3)设
为大于或等于1的实数,证明:
.(提示:可设
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7a1783349936cc7254a4a8694c6812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1bedaf3854b48806b82b3b804451cf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0fec4d10407498ec4692b33ebe1bb7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1784a3a9dd90c51dab965445d65f08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2697ef67790838c84cc238a0334c5d47.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/008ab9b6200370bd8d534a6317cb88e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6da13af19b32430759c9c1d1aea894e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b16ad49f62d7362441e3b92efe7f87d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b47ade684a2e49ef6139afe6ab59a29.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1d4c274b53adfbffc4b19e7adbc39d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6694499b581256296277c515f6dcdc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10cda4049695561dab3e0803c3a287fe.png)
您最近一年使用:0次
解题方法
3 . 已知函数
,其中
.
(1)当
时,若
,求
的值;
(2)证明:
;
(3)若函数
的最大值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f40b7076417a2d9a77657020cd3d0d1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fadd2e6f0aa16c2c466c904474ffc79c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9920ba41061fb4971be07bda1ddfb2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0698b324aad6962f9f50b240cffe48.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3125c342e7fcc6ba0aff633dbaf8d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
真题
解题方法
4 . 已知数列
满足:
,且
.
(1)求数列
的通项公式;
(2)求证:对于一切正整数n,不等式
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f4e1236d7dc0366d9523d0cbb426be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc571049e2b9b459a10c5e8cb3aba12.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求证:对于一切正整数n,不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27dec6145263cd2fb7731bec5e0f5f5.png)
您最近一年使用:0次
2021-09-25更新
|
714次组卷
|
3卷引用:2006 年普通高等学校招生考试数学(理)试题(江西卷)
5 . 已知
,
,
为正数,且满足
.
(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/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a57e060f61f7efa54982bda67db483a.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f188a3ecd0fd051c3f81931f169357c8.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcc1212428c8a875b9896fd6f0b5c25.png)
您最近一年使用:0次
2019-09-19更新
|
1270次组卷
|
10卷引用:河北省邢台市2019-2020学年高三上学期第一次摸底考试数学(理科)试题
河北省邢台市2019-2020学年高三上学期第一次摸底考试数学(理科)试题2020年河北省邢台市高三上学期一摸数学(文)试题广东省佛山市顺德区2020届高三上学期统一调研测验(一)数学(文)试题2020届广东省佛山市顺德区高三第一次教学质量检测数学理科试题2020届广东省佛山市顺德区高三第一次教学质量检测数学文科试题江西省宜春市2019-2020学年高三5月模拟考试数学(文)试题四川省乐山市2020届高三第三次调查研究考试数学(理)试题四川省乐山市2020届高三第三次调查研究考试数学(文)试题陕西省榆林市绥德中学2020届高三下学期第五次模拟考试数学(理)试题江西省鹰潭市第一中学2021届高三上学期第三次月考数学(文)试题
解题方法
6 . 已知函数
(
为常数).
(1)若函数
有3个零点,求实数
的取值范围;
(2)记
,若
与
在
有两个互异的交点
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290b11e6fb6ee46c3ef9e58db1c4fcc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd766591412a3778e801e689022df6d.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6e28dbfcdd6fb66b9ff759be044287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107babba45f110012183dc4dc54490f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2210f152080d9a68a97c805f5c1cde96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74b348ef9ae62245f05324c52dc03e53.png)
您最近一年使用:0次
7 . 已知
的三边长
,三内角为
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f5573b30734d65648f61c0a94c98de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b102b36cba4c1868afcd7a591a796da.png)
您最近一年使用:0次
名校
解题方法
8 . 设函数
.
(1)若
的解集为
,求实数
,
的值;
(2)当
,
时,若存在
,使得
成立的
的最大值为
,且实数
,
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6228f46a87a5a980ba45d304e90fe7e0.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abdaffa9c15517afe6d7ba6488f88f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dccf1f9faac56117d6d3dd1dddd286d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f07ad90ca228230b03f12eb48ee0c1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/128596b1fa47e37f7ddd307caf1f2be3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37462b3ca360fb3aa151dbff9a57c91b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45919ba8b183e7d6f5fa017a24512b2b.png)
您最近一年使用:0次
2020-07-22更新
|
552次组卷
|
3卷引用:吉林省梅河口市第五中学2020届高三第七次模拟考试数学(文)试题
吉林省梅河口市第五中学2020届高三第七次模拟考试数学(文)试题吉林省通化市梅河口五中2020届高三高考数学(文科)七模试题(已下线)专题28 证明不等式的常见技巧-学会解题之高三数学万能解题模板【2022版】
9 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d3d94dd231911cc32a88c52fec57c4.png)
(1)求
的取值范围;
(2)若
,证明:
;
(3)求所有整数
,使得
恒成立.注:
为自然对数的底数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d3d94dd231911cc32a88c52fec57c4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbdb0c3d1cfb2fd04cf97d23fc643976.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d189e23953bff9793761e50fc07958.png)
(3)求所有整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddfe16eafe503582cfc448816fa810d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad56439b3dd50694e5c9f473d2c1a875.png)
您最近一年使用:0次
10 . 已知数列
是公比为
的等比数列,且
是
与
的等比中项,其前
项和为
;数列
是等差数列,
,其前
项和
满足
(
为常数,且
).
(1)求数列
的通项公式及
的值;
(2)设
.求证:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f3c9d6e50a25259b9a2d9970f4c9e0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f73beab6c3552805de18790aaf469977.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/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/499b4ab23284486683f152df5bc295fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea40947c1dac4e4b0f3afceb928b0038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/472393b18c7880e73b40e31fbe2d951c.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdde201d1edd5cc2d0f6605ce4e45954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbde64b077564fd67db43ead6df44824.png)
您最近一年使用:0次
2019-04-22更新
|
702次组卷
|
2卷引用:【校级联考】天津市九校联考2019届高三数学(理)学科试题