解题方法
1 . 函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a533553c1e7cff7175a2f27a816aca1.png)
(1)若
,求
的解集;
(2)当
恒成立时,求
的取值范围;
(3)若方程
有两个实数根
,且
,求
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a533553c1e7cff7175a2f27a816aca1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若方程
![](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/ec8b7e652983f62b514e28aac916c8d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
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解题方法
2 . 设函数
的定义域为
,如果存在函数
,使得
对于一切实数
都成立,那么称
为
的一个“承托函数”.已知函数
的图象经过点
.
(1)若
,且
的图象又经过点
,直接写出函数
的解析式以及
的一个“承托函数”;
(2)是否存在常数
,
,
,使得
为函数
的一个“承托函数”,且
为函数
的一个“承托函数”?若存在,求出
,
,
的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447d6f62c09c1d05346fd16a24159f6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d5e308cd5469e0f28a8d75f79903f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2c84e7b41a841a230ed5f8a42309aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)是否存在常数
![](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/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54ae8d3bcf341657055ef9fc84a9d396.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/071a7e733d466949ac935b4b8ee8d183.png)
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19-20高一·浙江杭州·阶段练习
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3 . 已知二次函数
.
(1)已知
的解集为
,求实数b,c的值;
(2)已知
,设
是关于x的方程
的两根,且
,求实数b的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78db57aea20336a05dada6526b29ae6.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76098dfa7b2350de681e071a1a15f69d.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae610748ad3aaeed2fa7686701fe828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ce83059be4fe269369b57be5f23cc5.png)
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4 . 已知函数
.
(1)若
,求不等式
的解集;
(2)若不等式
的解集为
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c009c79f5a2e63c0c06f6d61d70352.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b624d88827e92e12bc0a8f1067cbe72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2019-11-15更新
|
325次组卷
|
2卷引用:北京市丰台区2019-2020学年高一上学期期中数学(B卷)试题
名校
5 . 若不等式
对任意
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c9bec0e35ac7cba65031047a7f319bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2018-10-05更新
|
1489次组卷
|
6卷引用:北京市衡中清大教育集团2017-2018学年高一上学期第一次月考数学试卷
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6 . 已知点列
(
,
)满足
,且
与
(
) 中有且仅有一个成立.
(Ⅰ)写出满足
且
的所有点列;
(Ⅱ) 证明:对于任意给定的
(
,
),不存在点列
,使得
;
(Ⅲ)当
且
(
)时,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcce692e4a9af4e99d5e3eaceaeb035f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e10715f077c9f24890f9b5575e24ee64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1707546ddf59ebb4e539acc2d33c18c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2c885060fb3c677d9754030d310a5b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/791e41221cb1e1a1d34f45c9c3c87cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fffbd703ec2a1bf37b9946c31149f73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa907fcda33835ac3a791b1542ba5f30.png)
(Ⅰ)写出满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcbd5bb726a08c308b48373afebbb768.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca970d0979258917904e660453e72a0e.png)
(Ⅱ) 证明:对于任意给定的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e10715f077c9f24890f9b5575e24ee64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1707546ddf59ebb4e539acc2d33c18c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d04c95bf579209cf1c2a9e6a25916cbf.png)
(Ⅲ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b16f0cea77a501fb77a329dd30a26a79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22953865440edf65a93530aef70894df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9827f1f30409a77e410b1378df30bd33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/086d9dd78ad4a66dfd11e6756fef15e9.png)
您最近一年使用:0次
2016-12-03更新
|
1302次组卷
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4卷引用:2015届北京市西城区高三一模考试理科数学试卷