解题方法
1 . 已知定义在R上的偶函数
满足
,当
时,
.函数
,则
与
的图象所有交点的横坐标之和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/935799b8d9f3de0c021e2a7df70d96f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1376168658dbe7f5b7f4d75fb1db545a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d3cc66b811ad2395efe04d93b61c711.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/994ab8b87ed1e595903a35ece809d2b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450868427afd4832db685d1d3516c0fc.png)
A.2 | B.4 | C.6 | D.8 |
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解题方法
2 . 设正实数
,
,
分别满足
,则
,
,
的大小关系为( )
![](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/cdba5039238dd9d2fba86b48dad64f03.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)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 .
,若
有3个不同的零点,则
的取值范围为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/776e3c7ddddfa99e6f6f6102412a0c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa2ecaff1220a2801a8a17166296fffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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4 . 已知指数函数
,对数函数
的图象如图所示,则下列关系成立的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/19a28640-255a-46f1-b0aa-8da83717402d.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da53929a8f67b9aa3827fdbd73ebd265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0152509f83adcdfc5f5d4b27e4185b05.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/19a28640-255a-46f1-b0aa-8da83717402d.png?resizew=151)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 已知函数
,若函数
有3个零点,则实数a的取值范围为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b9d625336e0113e0e84ef3e29d297e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039f9392112593405d4c0f1bea7d31f3.png)
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解题方法
6 . 若关于
的方程
有两个不等根,则实数
的取值范围为_______________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621a90f80af1ef6780b407c1009b1eab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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解题方法
7 . 已知函数
的图象不过第二象限,则实数
的取值范围是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41041b2f1720bc403d07fc0ae81b333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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8 . 要使
的图象不经过第一象限,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/795b5fa63b6992743558a3d85a76753a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023高一上·全国·专题练习
解题方法
9 . 若函数
(
,且
)的图象不经过第二象限,那么a,b的取值范围分别为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf93e1bf1a68d1d1e9337e50bfbc147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
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解题方法
10 . 已知函数
(
且
的图象如图所示,则函数
的大致图象不可能为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/46d340a3-c997-4308-8513-ee57a4dadaaf.png?resizew=134)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954a484cdf899af602c708ced50c57c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fa1476cf3552b9ae91ef039b1c6c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b7b518d45d0e89c211971ae19d9fbb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/46d340a3-c997-4308-8513-ee57a4dadaaf.png?resizew=134)
A.![]() | B.![]() | C.![]() | D.![]() |
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