名校
1 .
,已知
是定义在
上的偶函数,且
时,
,则集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9163ebe812708ee5337d62298c2e3363.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08793fa6cbcd2da8a41618ba4065649c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2628e2dd7a988cc80530e739c22b2280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/986cda000d28188fbf069d4587c7e23f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb02fa6a94d9dfc5378e2b8a52a3a4a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9163ebe812708ee5337d62298c2e3363.png)
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名校
解题方法
2 . 已知
,若函数
有5个零点,则实数
的取值范围是_________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a994158489926804a076deb042d639d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f46514ab6b6a86f780c00a38c27b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2024·全国·模拟预测
解题方法
3 . 已知函数
,若
,且
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34201266e69c1483a51281eb383abd15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859458471c86ae39e0cc42d2d960d03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93c54705d32dc6820f1a90eec2225dcf.png)
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4 . 已知函数
,
,其中
.
①若函数
无零点,则
的一个取值为_______ ;
②若函数
有4个零点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ade331851befdd556917c4a9de446a38.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afa10cef49beaf703cde104d11537ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039f9392112593405d4c0f1bea7d31f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
①若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31571aa1eaac5653a866cefd7fccf575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ade331851befdd556917c4a9de446a38.png)
您最近一年使用:0次
2024·全国·模拟预测
解题方法
5 . 已知函数
,若关于
的方程
有3个不相等的实数根,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e54dbc81c3d990460bf05a5cf5772e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eb2e46f49adba6036e2624639a1b966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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6 . 已知函数
,若实数
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
__________ ;
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df43172c0bd14d455a7ca7eb8e56efe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deeca963611c2aaaaa2637933877b128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6637110325fc5bcb6337762aecf53d4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae24688d4c45aad43e9af0b7bbfda6b.png)
您最近一年使用:0次
2024高三下·天津·专题练习
7 . 设函数
,若不等式
恒成立,则实数
的取值范围为 __ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7f6d89ad82ec6c51f00047a5f3864d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b1473b3ac4e00d5a4cf986cc36e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2024·全国·模拟预测
8 .
表示两个实数
,
中的较小数.已知函数
,且当
时,
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6323f3d42a8c329f1231a4183cca21c3.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/f5e729f82c89e146d61ce638751ce7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e14206c7d228a7c2259a7b27da8813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba934874cc9f2ab272fdff67ea23bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51442bf0ef97e173588b54ee77db26b5.png)
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9 . 设函数
,若
有四个实数根
,
,
,
,且
,则
的取值范围__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c644290b78dbdda8ec48b137f9c5880.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c342d52fc26cc550a45b80756903bee6.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/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3604274ad6707a906eba371a9e884144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/961ccb40cc85faaed624b76eee6dad19.png)
您最近一年使用:0次
名校
解题方法
10 . 若函数
无最大值,则实数a的取值范围____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95782758bafbe17a661efd8395055121.png)
您最近一年使用:0次