名校
解题方法
1 . 函数
.
(1)若
的定义域为
,求实数a的取值范围;
(2)方程
在区间
上有解,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/508b4538532503edb1d5989ee9ccc363.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
(2)方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/437d918453f62cc2048a5fdbf97ad1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b094cba781181aeb90752170e9ba6c94.png)
您最近一年使用:0次
名校
2 . 函数
的零点为
,函数
的零点为
,若
,则实数a的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b4e8505a11fe8ba1a09d27e79f46a62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/483fdc52a68015e29f985f7249f8df89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38539ff870207a4e0c7dd315735e5793.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
3 . 已知集合
,若
,则实数
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0ab01ab90714dc20e29112a4bb2c35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ba583329b831d06312a1f20edb4a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
A.-1或2 | B.1 | C.![]() | D.2 |
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名校
4 . 已知函数
有两个零点
,
,则可设
,由
可知
,
,这就是一元二次方程根与系数的关系,也称韦达定理.多项式运算可以更好地理解“韦达定理”,类似地,若
为方程
的3个实数根,设
,则
为
的系数,
为
的系数,
为常数项,于是有
,
,
实际上任意实系数
次方程都有类似结论.设方程
的四个实数根为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ade331851befdd556917c4a9de446a38.png)
__________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c8617d09dc5c1fe2639ac969370a572.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bd0587f5d6a3b5db9e4a93e0dbc0ef.png)
![](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/d7b5ee46e4c079505266ef307a783c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cce519ecad53af16de6b8fa9434110e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f05dd02b6f561dcf94bab8a3160108d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/897630dd340ec6c6b20cdd754d0a12c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3db92d5c0ce7887591208ecefbf2c557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1e94cb8a9c68817f1cfb36703e34165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/704bf1ed4962891486b3e577f411d76b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55a81cc6b05568ff6a73fec5060d83c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002631ce8fcc3b3fff84adf8eaca728e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c42879b831382d3d84c43a70a3ed78f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1d0b683ce81f1619626dcdca6b5a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c100d28933d6637f946f31bb93c42418.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b60fd3ebd3200f078155fbeeb44fc51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ccd22fd0ca1a8e1468329284f91b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ade331851befdd556917c4a9de446a38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c8617d09dc5c1fe2639ac969370a572.png)
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名校
解题方法
5 . 设
,
,
,则三者的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef2a45773db8d347f0cfa4e4fca7fd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd1cb90da3fcff90e3a6ad70765b7b88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca87d157b38f2aa01be2a889915cd3b6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
6 . 已知函数
,则不等式
的解集为 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa58b0bc91c4d7c44ff4e940dc208f01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80171463ed994ccf376ded830899af2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-05-09更新
|
1123次组卷
|
2卷引用:河北省保定市第一中学第八届1+3贯通班2023-2024学年高一下学期期中考试数学试卷
名校
解题方法
7 . 已知函数
的部分图像如图所示,则
的解析式可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024-05-09更新
|
724次组卷
|
3卷引用:河北省保定市第一中学第八届1+3贯通班2023-2024学年高一下学期期中考试数学试卷
名校
解题方法
8 . 设
是定义在
上的奇函数,且
,当
时,
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545931b962cf570712d04888b57093f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8b527865aefa9186462f2ad4a72617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d27e3b8fee9987862dc813d91e3c54d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96ace4b556efb008bbda912764bd2894.png)
A.-1 | B.-2 | C.2 | D.1 |
您最近一年使用:0次
2024-05-09更新
|
1008次组卷
|
2卷引用:河北省保定市第一中学第八届1+3贯通班2023-2024学年高一下学期期中考试数学试卷
名校
9 . 设
为全集,集合
,
.
(1)若
,求
,
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a426902752d0996f65c2deab355d738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c258b24d01c5a925744e6033757cde3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4cc663a3adf2afb8a31b21adfbb045.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
解题方法
10 . 设函数
在区间
上单调递减,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1052a246c1ac47c202189315f5e484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fefeac0d38a1a529666ebbb9278835a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次