解题方法
1 . 证明下列不等式:
(1)当
时,求证:
;
(2)设
,
,若
,求证:
.
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b0745ecaef6c9d1b65666e30892f597.png)
(2)设
![](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/feac4de538eecda2cb5cf860cd665261.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3183647223da8dceeeee49bb69c64166.png)
您最近一年使用:0次
2018-02-27更新
|
1017次组卷
|
2卷引用:湖北省孝感市八校2017-2018学年高二上学期期末考试数学(文)试题
11-12高二下·湖北武汉·期中
2 . (1)证明:
;
(2)已知
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa4ad4abe0872b336db27916331493e.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30cd36accf21cdbd55a989b9ace3d8b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead56bb8f5e7a72e9f8640e795caf68d.png)
您最近一年使用:0次
名校
3 . (1)设集合
,
,求:
,
;
(2)已知
、
、
都是正数,且满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd810bd3384aa74f58f8b5f498be415d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db38e7861848bb3498f7e5dc5ff32d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de5d0b7794c891140d333dd2615a2211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e55f3ec8270bc70fe46ef786bfb6a69.png)
您最近一年使用:0次
10-11高二下·湖北黄冈·期中
名校
4 . (1)已知
,
是正常数,且
,
,求证:
,指出等号成立的条件;
(2)求函数
(
)的最小值,指出取最小值时
的值.
![](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/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19659e3f654072a96ebab5fab7ec49ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878f834c03d26711f64bb3abe20e5488.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84bc589738d711282fc94d3b48e27306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b7511e6ce72a5232820b7007f976be9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
2021-08-23更新
|
411次组卷
|
14卷引用:2010-2011学年湖北省黄冈中学高二下学期期中考试文科数学卷
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解题方法
5 . 数列
满足
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(1)求证:数列
为等比数列
(2)是否存在互不相等的正整数
,
,
,使得
,
,
成等差数列且
,
,
成等比数列?若存在,求符合条件的
,
,
,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc6545b8eca1c4223ed701a199a85683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7643e8b7aa32ebf299048417a94432dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213e22890204937a5dded4436369390f.png)
(2)是否存在互不相等的正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb10dd730b827d3ec05aebe8c18c9e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ff1721a696504d02a4c4b20e5ba7f02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4d466d07fa48ce8323be14480fe108.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
6 . 在△
中,内角
有关系
在四边形
中,内角
有关系
在五边形
中,内角
有关系![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad81d02dd56298b09d296ed7b17e140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee7bb49247387a9028602315729f8d7.png)
(1)猜想在
边形
中
有怎样的关系(不需证明);
(2)用你学过的知识,证明△
中的关系:
,并指出等号成立的条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a4e656a25bc7a76b73f973987040e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af1491e978fb880603b882dc3b9ef942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1d75df9d80ce1e0b7cb50464e293864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad81d02dd56298b09d296ed7b17e140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee7bb49247387a9028602315729f8d7.png)
(1)猜想在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613e0062111a4337e4f38d0763fac544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fff8eac75ecf48ad9727c2b1238cdfe9.png)
(2)用你学过的知识,证明△
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec003ed679c4554289d8b65edec83297.png)
您最近一年使用:0次
7 . (1)已知
,
都是正数,且
,求证:
;
(2)已知
,
,
都是正数,求证:
.
![](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/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98941347dd7ac01f5e63a6c5930dd5fa.png)
(2)已知
![](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/5543c058f0418510ee7d60d6bb193f19.png)
您最近一年使用:0次
2016-12-03更新
|
1376次组卷
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9卷引用:湖北鄂州市2018-2019学年度高中质量监测高二数学(文科)试题
湖北鄂州市2018-2019学年度高中质量监测高二数学(文科)试题2015届吉林省长春市普通高中高三质量监测三理科数学试卷2015届吉林省长春市普通高中高三质量监测三文科数学试卷2016届青海西宁五中四中十四中高三下学期联考数学(理)试卷【全国省级联考】黑龙江省2018届高三高考仿真模拟(三)考试数学(理科)试题【全国省级联考】黑龙江省2018年普通高等学校招生全国统一考试仿真模拟(三)数学(文科)试题(已下线)文科数学-2020年高考押题预测卷02(新课标Ⅲ卷)《2020年高考押题预测卷》(已下线)专题14.2 不等式的证明(精练)-2021届高考数学(理)一轮复习讲练测河北省邯郸市魏县第三中学2021-2022学年高一上学期第一次月考数学试题