利用函数求下列不等式的解集:
(1)
;
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7436cf2e64f40ea5f5a79e8a143dab6e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/185aa7bfefc07040e8fef55350c1702a.png)
2020高一·全国·专题练习 查看更多[1]
(已下线)【新教材精创】3.2 函数与方程、不等式之间的关系 教学设计(2)-人教B版高中数学必修第一册
更新时间:2023-10-18 10:45:47
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【推荐1】(1)(2)(3)分别是函数
和
在不同范围的图象,借助计算工具估算出使
的
的取值范围(精确到0.01).
(1)
(2)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36cf7675fc49cbdf3611ac547d85c8f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d1414cca0cf4b0b709414ee707e73b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/736818546e081e85ab5fb79a35ddf7e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/8f40ac99-66ad-4a1c-88bd-b9c9b739ea5f.png?resizew=169)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/6ebe8e43-e209-461e-a643-627d2414f1f3.png?resizew=189)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/1974ad8f-46d2-4c5e-bf15-7675d54ce14b.png?resizew=182)
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解题方法
【推荐2】已知函数
.
(1)求方程
的解;
(2)若关于
的方程
在
上有实数解,求实数
的取值范围;
(3)若
将区间
划分成2021个小区间,且满足
,使得和式
恒成立,试求出实数
的最小值并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6348f01021ed4f35c802ba6f5337bca1.png)
(1)求方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/515f88ff8fa1cad560307bd2b2e13fcb.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e3d8787fe64974039d257b534733289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad814089e37543b2f547af9ae75b6dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39a7d3f20b68fd9a9df5c8047887371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2ec965488c7e1cea085463c7731285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dced5113d82c9e18842e3b190a13d73a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54aae75c4a164302db6abdfbf4dc362a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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【推荐3】设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13eb0c2fb57bedf3835aaeab2e5233d9.png)
.
(1)证明:
为偶函数;
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13eb0c2fb57bedf3835aaeab2e5233d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f98b821875dc0e747a9fccf90e7d6aac.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a3186c5d8a4ea005024e8849699edf0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81a6df14e9e49684532422da4f15a39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5363c856445cbfab38f18ac18d16e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
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【推荐1】已知
.
(1)若
,求
的解集A;
(2)若对一切
的实数,均有
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eb8d0c27865fd4a00c908b4defe02f3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d462ed4ec22e8fe51f09eb30e8792532.png)
(2)若对一切
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f0cc0f8df1928f575343a12dbea7106.png)
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