名校
1 . 已知函数
.
(1)若函数
的解集为
,求函数
的解集;
(2)若
,
,
,试证明:对于任意
,有
;
(3)若
时,有
,求证:当
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d7ed6f4b0e08cd887d2fdc2a5e37e4.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd089f65fb0afc3e31275ca01bd158d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/008da60eb4dd38b35c5799fd5f7e0e97.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c8cef5386fbe3367564f9ebbc811cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/897f9f5f44fe210d22abe4cbe719847d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de87cccecadfae19f11358010521f96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88a6bea084567e3055f0e58499398a46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e0950253f473515ab175867f8fc5b5a.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88a6bea084567e3055f0e58499398a46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/366839b25310cb3168d411b1d5f73b06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88a6bea084567e3055f0e58499398a46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d781166b65da7a054727f5503591e984.png)
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解题方法
2 . (1)若方程
的解集为
,求
的取值范围;
(2)在(1)条件下使用反证法证明以下三个方程:
,
,
中至少有一个方程有实数解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39c1ae64a85cfa5e1e75cd2843dd206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/933093b52cca887f597cbe22a5467b11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)在(1)条件下使用反证法证明以下三个方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b265fae9fe9a59830c91ba9a0ec762c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0516c47dae6f3ea0a11d2195fe32c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bab67a391ba2678e91073f442b26425.png)
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名校
3 . 已知实常数a、b,满足
,
(1)证明:关于
的方程
有两个不同的实数解.
(2)若关于
的方程
有两个不同的实数解
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
(1)证明:关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358677b8b71354b1b639b231e5c647a7.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358677b8b71354b1b639b231e5c647a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b5f32c09caa0be0d4c33be07aa4530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ba253c3d7949e75483437b3dc3841b.png)
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解题方法
4 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2f488c96b26bb2f5bbea046f4b8dcbd.png)
(1)求证:不论
取何值,函数
总存在零点.
(2)若对于任意的
,都有
,求实数
的取值范围.
(3)对于给定的正数
,存在一个最大的正数
,使得在整个区间
上,不等式
恒成立,求
的表达式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2f488c96b26bb2f5bbea046f4b8dcbd.png)
(1)求证:不论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f0ca536621ec8db02707ba65917029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7868566ec2b22bc3be4cb2ca88c1f1bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)对于给定的正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7711204ab55319790f5adba1e0151962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e6e1b9b939ecf6b57bea30495a1d726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12efe4b11648d94a4d37fa409bd0a424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7711204ab55319790f5adba1e0151962.png)
您最近一年使用:0次
名校
解题方法
5 . (1)设
均为实数,且
,求证:
.
(2)已知实数
满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83d19a3c7b83608ccc3b47c7d15f4596.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729d91bd444b64e05a046836a7392aab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60376d38e1eb7bf102743e95bcbb6d7.png)
(2)已知实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597b657580f9e7669eeb848adba0f4e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e8601794ea87f18b840e3abf951d838.png)
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名校
6 . 已知函数
,设关于
的方程
的两实根为
,方程
的两实根为
.
(1)若
,求
与
的关系式;
(2)若
均为负整数,且
,求
的解析式;
(3)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b856daebd7eaf5b93a4a48a106f69aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e44284cb19805a584880a686ac3df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43c231b0c1cfa146856de121f9032db2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43c231b0c1cfa146856de121f9032db2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/479a8ef1ad7f1e7d2d057cd39acc3d5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ef8551ec0e5fb16d58152adaf4af57a.png)
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21-22高一上·全国·课后作业
解题方法
7 .
,若
.
求证:(1)方程
有实数根;
(2)若
,且
是方程
的两个实数根,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f70215f1b05d129496249f76ea479ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0df1491ba2660a39abf52af7fa1cf7.png)
求证:(1)方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4749701479ff908802f2794f1752a58.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e0852599fd15f0648eb8137b098c8da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4749701479ff908802f2794f1752a58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e7038b62f063f798e6bfae8f9030fea.png)
您最近一年使用:0次
2021-08-22更新
|
314次组卷
|
4卷引用:专练14 三个二次(二次函数、二次方程、二次不等式)的综合运用-2021-2022学年高一数学上册同步课后专练(人版A版必修第一册)
(已下线)专练14 三个二次(二次函数、二次方程、二次不等式)的综合运用-2021-2022学年高一数学上册同步课后专练(人版A版必修第一册)(已下线)试卷20(第1章-7.1 角与弧度)2021-2022学年高一数学易错题、精典题滚动训练(苏教版2019必修第一册)(已下线)课时2.3 (同步练习)二次函数与一元二次方程、不等式-2021-2022学年高一数学新课学习讲与练精品资源(人教版2019必修第一册)(已下线)专题05 集合与不等式综合大题归类
2022高三·全国·专题练习
8 . 设
,若
,
,求证:
(1)方程
有实数根;
(2)
;
(3)设
,
是方程
的两个实数根,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96defd6ccea9977b250daad116ef28cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e56f4504e0f80fd031c8b5f41832e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c4766fa588edd1021b3d38b8b16429a.png)
(1)方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e0852599fd15f0648eb8137b098c8da.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3439794cacd5743568f58fbbc30fd6.png)
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名校
9 . 已知关于x的不等式
的解集是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94bbdee8fdf23ef79b9673a2c7380ba2.png)
(1)求不等式
的解集;
(2)设函数
,判断函数
在
的单调性(不用证明),并求函数
在
上的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fafbb6de612bd41a200ff94c22985266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94bbdee8fdf23ef79b9673a2c7380ba2.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7199e120624dcdf44151757015e574e.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e571176b5d16acb9f2e6f1595dce654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27e0400d730672ae2110ff48786dd1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27e0400d730672ae2110ff48786dd1d.png)
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19-20高一·浙江杭州·阶段练习
解题方法
10 . 已知函数
.
(Ⅰ)函数
对任意实数
都成立,求a,b的值;
(Ⅱ)记集合
,集合
,若
,
(ⅰ)求证:
;
(ⅱ)求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50bc26bf4e5e607e521dce38a58976b.png)
(Ⅰ)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0207a56b97765abad8eb4806ddf9f72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
(Ⅱ)记集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31f5bf45b794138f244359d394a16fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca9e72142d442826e2cdd87b6b218d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79d02e5de0c92487382f4b98376e9740.png)
(ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fed3b3d7630d036318759b5ff0426649.png)
(ⅱ)求实数a的取值范围.
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