1 . 对于函数
,给出下列结论:
①函数
的图象关于点
对称;
②函数
的对称轴是
,
;
③若函数
是偶函数,则
的最小值为
;
④函数
在
的值域为
,
其中正确的命题个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c8d435a354619cec663604f939e8bf.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5bf205e9f4484245474d6889b168d45.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4293b70e323dcd5d9441767fd6ece384.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/232d1ce3ad14256b1543e6007ff1675d.png)
③若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a46a0fc7c90b66b3aeb64aa64448eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d061d17bbc13e2d61a0c4aee0cb9ced3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5e24f048f9a87274863ba2c037d7a5c.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8f1b68c4e44b4fac6780cc7a04b2562.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60cbaaa322c6e2ea61db5be77e412a7.png)
其中正确的命题个数是( )
A.0 | B.1 | C.2 | D.3 |
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2 . 函数
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d5e99c04d285c057e44af0b739d0b7.png)
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解题方法
3 . 已知
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b63e88d9ce4afb1766093727c466c577.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bda318adf65c6b6fd45f651365f52346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84effab46d6bfc6cb110963e027a6b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2024f720b6d912e68fe6ab164852a6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b63e88d9ce4afb1766093727c466c577.png)
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4 . 定义 如果函数
和
的图像上分别存在点
和
关于
轴对称,则称函数
和
具有
关系.
(1)若
,试判断函数
和
是否具有
关系;
(2)若函数
和
不具有
关系,求实数
的取值范围;
(3)若函数
和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c04f47dc0f7298b89b4d9f6195686f85.png)
在区间
上具有
关系,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb2faa63899873813748f6a28b8a92e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb2faa63899873813748f6a28b8a92e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/166703f700475d6bcd4b8ee7c71f2c7f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c7c95672da462203194363bb292dbcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb2faa63899873813748f6a28b8a92e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/166703f700475d6bcd4b8ee7c71f2c7f.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b524386c37301f3cfad5f28ef7883ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c95bc37ed65d74fba895bf21c4db925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/166703f700475d6bcd4b8ee7c71f2c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545ac68beedab0a5490f97c88437a317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c04f47dc0f7298b89b4d9f6195686f85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e5b56723fc6f8297356195e084fd9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b23efa380a58dc9663ba06dc249ce721.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/166703f700475d6bcd4b8ee7c71f2c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
5 . 正实数x,y满足:存在
和
,使得
,
,
,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe3105e48ecbd0167a1ebc9480d4b6a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f0da7936f5bf3c07a3122e9fd1f0ca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/946a7b7cec9439408d5d3c3a32b15d51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a953ac738380029ff0143c4a4596c62f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d4e0ff2f771eb4657193ec1afba3f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
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6 . 已知函数
,若对于任意的实数
都能构成三角形的三条边长,则称函数
为
上的“完美三角形函数”.
(1)记
在
上的最大值、最小值分别为
,试判断“
”是“
为
上的“完美三角形函数”的什么条件?不需要证明;
(2)设向量
,若函数
为
上的“完美三角形函数”,求实数
的取值范围;
(3)已知函数
为
(
为正的实常数)上的“完美三角形函数”.函数
的图象上,是否存在不同的三个点
,它们在以
轴为实轴,
轴为虚轴的复平面上所对应的复数分别为
,满足
,且
?若存在,请求出相应的复数
,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7942abede925d39586071ad73e8c7de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/237d8cd9bc612b6417614fbd70ee6c57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(1)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b95e62946d710707f89d0c9f82c7ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02d5fbfa2feb617c6fabd1c35c5fb5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)设向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1cf43aad35a9c6360908448b348be1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/138ddbc9e4e842267a38425141063cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42017367e7f9fc70f99d70551852d6e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2537912dc33dfc76ea1afa48c5d9e261.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebbc272e8a634e515c14f52bd64e84b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9246032f3154df10f63e03fef7ec5eb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](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/1be94c746ea0cb4834e5295672e229a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2374bf53f7afc6eac3cf45d2befef826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a328844e8b5643eeda51d02c53bf248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be94c746ea0cb4834e5295672e229a4.png)
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7 . 已知函数
.
(1)求函数
的在
上单调递减区间;
(2)若函数
在区间
上有且只有两个零点,求m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/355ccf68073239a76e677558d949432f.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c195698ac387fe53b3b1e0248a1fcc92.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e3f7f762131c77a3c8440b4a3bc1d12.png)
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2024高一下·上海·专题练习
解题方法
8 . (1)证明:
;
(2)化简:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711a0b572919121037d12cbd89db23a2.png)
(2)化简:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6551e349ab9cdaceeddd10df7d02b45.png)
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解题方法
9 . 已知函数
.则函数
的值域为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/222dba50271ec519285458609a706b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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10 . 已知函数
.
(1)求
的单调递增区间;
(2)在
中,a,b,c为角A,B,C的对边,且满足
,且
,求角A的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba5015a63810d0b1d646fedff541a40.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8008fc63c06f9fa1f25a8df1a8352f63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc23eac3b58e300bda9b37f14c2f852b.png)
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