解题方法
1 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12455052a982704ebaee009ab00fc11f.png)
(1)若关于x的不等式
的解集为
,求实数a和b的值;
(2)若函数
在
上的最大值为2,求实数a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12455052a982704ebaee009ab00fc11f.png)
(1)若关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36221995792c354563a6cef18bb3eb4e.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8715d69eba6fe55144b769fa15f06124.png)
您最近一年使用:0次
14-15高三上·上海徐汇·期中
名校
解题方法
2 . 已知函数
在区间
上有最大值4,最小值1,设函数
.
(1)求
、
的值及函数
的解析式;
(2)若不等式
在
时恒成立,求实数
的取值范围;
(3)如果关于
的方程
有三个相异的实数根,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28748fcd2ade584e5813e4eb50772a90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44284ff1ea50429a0610e13363be6080.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3029a39fe6d67da0c12f68fd19e155.png)
(1)求
![](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/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1fd53fb8780a2bd9e451a92c7c92d9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1591d4244dcf5539a4ae98f554e91e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)如果关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f28bcf3eba880e42350c93a4e334ca4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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3 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c035b8e60e79f90257e464ac6d5a060b.png)
(1)若
,求解关于x的不等式
;
(2)若
,设
,若
图像上的点都位于直线
的上方,求实数t的取值范围
(3)在(2)的条件下,设
,如果
的解集为
,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c035b8e60e79f90257e464ac6d5a060b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1cb3b9f7dd2dcfe0850a820132d3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d473c28d3175e291f746d403151067a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee6a52f061b8bfa1e1b2dbe9b05550f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b6280959e386eed67ce5d6f8da5dcdc.png)
(3)在(2)的条件下,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d910e77cd50d1eebe828d1b12af8e3da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/620aa020ab98ace46b463f419b7255e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0547d0e1e8b5ffb88d07dd8e3d835049.png)
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4 . 已知二次函数
,若不等式
的解集为
.
(1)解关于x的不等式:
;
(2)是否存在实数
,使得关于x的函数
(
)的最小值为-4?若存在,求a的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b56fff5e37834c7aaba3edfff0824507.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39a50d5b4c97e1cb43e62553741622e.png)
(1)解关于x的不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/748bf2454664dee9f78cd7bc59d4e156.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e436ea3ddcd13e69171135f0ff8e934a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812c41818daf7b63d0b6e24e8187d897.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53224898de85a85058ad336490bbbaa7.png)
您最近一年使用:0次
2019-12-11更新
|
250次组卷
|
3卷引用:上海市第二中学2019-2020学年高三上学期期中数学试题
名校
5 . 已知函数
,且
,对任意实数
,
成立.
(1)求函数
的解析式;
(2)若
,解关于
的不等式
;
(3)求最大的
使得存在
,只需
,就有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1915a1c8f18b3f42ce08d8f82af90708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a431537df789febf4bc45e3dc23cefaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/647ffc3291900b80c4c5460e49747c19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fffae95897e0ee93723b9ce43f6fa8dd.png)
(3)求最大的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee74315c62da704465b46d9baaf26c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995ec593baa4ef50b6d87c78380953d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2425497f56c3bdc9a8d7cde18e41d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bfc7d3c0bbc528e156df4d81c68cd7a.png)
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6 . 函数
(
),满足
,且
在
时恒成立.
(1)求
、
的值;
(2)若
,解不等式
;
(3)是否存在实数
,使函数
在区间
上有最小值
?若存在,请求出
的值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67eb334c4b43c383b80cc718fb50fdd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ae584b810af62e55f784a8a893cdf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/196be101149acfb6a6c4ceca7fc96828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1231c183e460f889b465355c8003f4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36aabd225e7ae2ee1836941bfe01af66.png)
(3)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613554940b48197cfb677e1b8052c06d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0442422375b46ed9da57921893797f2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d13ce3ebd1112220c639562739f1f9d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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7 . 已知二次函数
,若不等式
的解集为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/740a1b0dee8834b12aa85a8481e539e9.png)
(1)解关于
的不等式,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a03a70014eea31bbcad9138f23e008a8.png)
(2)已知实数
,且关于
的函数
的最小值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d69c5fcb66c05962be4c4dafbee298d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/740a1b0dee8834b12aa85a8481e539e9.png)
(1)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a03a70014eea31bbcad9138f23e008a8.png)
(2)已知实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882b660047bb6ded500cedba57958e00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8381272d5b9fe4582aa8c520611c44b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2019-11-08更新
|
1341次组卷
|
5卷引用:上海市松江二中2018-2019学年高一上学期期末数学试题
12-13高三上·上海·期中
8 . 已知函数
.
(1)当不等式
的解集为
时,求实数
的值;
(2)若
,且函数
在区间
上的最小值是
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db3e6117225673997bf42a5dc1ab55a.png)
(1)当不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a1b1fdcdde97a8c9e9339b2f33c5d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60866c4aabfb0611541fbb236fcc89c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e676f49304c874f9e48acd8b22e194b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcbafa9d06b887b6ade3efb9122760a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/422f50cbfa9dafb8fafeadd8a5f81aeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a44986287ed599f86a23cfffe788cc76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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