已知a,b,c均为正数,且
,证明:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a42d412d5a5c13e17ebc05ad19c098b2.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5567c73aead91151f22c3a83aa0f2092.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/750323a94254a8658d70da105241ef2c.png)
2023·全国·模拟预测 查看更多[3]
(已下线)2024年普通高等学校招生全国统一考试理科数学领航卷(二)(已下线)2024年普通高等学校招生全国统一考试文科数学领航卷(八)(已下线)考点7 基本不等式及其应用 --2024届高考数学考点总动员【练】
更新时间:2023-11-22 14:08:50
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解答题-问答题
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适中
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解题方法
【推荐1】已知存在
,使得
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.
(1)求
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(2)证明:
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799b324b514d6044672c133d8fef2dc4.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3c270c7508ec18bfae26af47763aab7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55d57f06fe39039e0be9d27ce28b1b35.png)
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【推荐2】已知a,b为正实数.
(1)若
,求证:
;
(2)若
,求证:
.
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89dc8118d95d6c7bd5b7d38667a498e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/485a2d99320384a0857b00ce9ab9e990.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be97cd1c7111b654d87d8fbb63b6a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d1c23264891eb9cfda0691334e5d43.png)
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适中
(0.65)
【推荐1】已知函数
.
(1)当
时,求不等式
的解集;
(2)若
的最小值为4,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b199c37c22a072b0a6ac35e1acc0bd1.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1074e5765256f1c5224287fe634ca91.png)
(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c5018e1e03b1456a7975266b279790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd89264ecd92c16cdcf3d3b95869a916.png)
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适中
(0.65)
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解题方法
【推荐1】已知函数
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都有
成立.
(1)求实数
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(2)设
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9faf3a641b059df29c9abb2b94cb2ea2.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](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/1f3b6f6193da0c42de9b75bdb8dd856b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b24fb641ad3f19c7f3e1feca7e4323.png)
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适中
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【推荐2】已知函数
.
(1)当
时,解不等式
;
(2)若
均为正数,
的最小值为4,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b99336431416ded28a3e971d6ddd484.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd456469aaa6dafb1e275183d217435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bf0995f32a13d0a9e423f3e88ab271.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2200c682f37b7ab77c8f897d52ba67f.png)
您最近一年使用:0次
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适中
(0.65)
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解题方法
【推荐3】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2158dba63d9f19065966c5557cd1b70.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57179e24f5bf8b0d1f89849ba8d922f3.png)
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