已知函数
.
(1)求
的最小正周期,并求出
的单调递减区间;
(2)求函数
的零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5c02a62bc16da9fd3fe0a3be040ef2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
更新时间:2020-02-17 15:59:04
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解答题-问答题
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【推荐1】已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2cbec5444b271bb63eae1309f88ae7f.png)
(1)求实数
的值;
(2)求函数
的最小正周期及单调增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e21f18219d37c1e73f4f3886a73b8f8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2cbec5444b271bb63eae1309f88ae7f.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
解题方法
【推荐2】已知
是实常数,
.
(1)当
时,求函数
的单调增区间;
(2)是否存在
,使得
是与
有关的常数函数,求出所有满足条件的
,若不存在,说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc849f246ca0d82bac78beaf64b91c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9c5dcfff2f777dbac390c16d7cb4de4.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354ac956269627cbd3c4088fe344014d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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解答题-问答题
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较易
(0.85)
【推荐1】已知函数
的图象经过点
.
(1)求函数
的最小正周期与单调递增区间.
(2)若
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf34406c2beb9db879d550e7da87833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d412733bc1c742b0b00da49d3d5a536.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6eec7d75a66a4407631f75320bb8b15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff2af4aaad3e5f9a1c5b1e6c92648114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a080cab44a7d3605430d67b207f9be.png)
您最近一年使用:0次
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较易
(0.85)
解题方法
【推荐2】已知向量
,
.设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8787fdc87d8d993a7b2f69f2759a8f94.png)
(1)求
的最小正周期;
(2)当
时,求函数
的最小值及取到最小值时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9469f0d04934f97d68470b4db674676e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e81f2bf88ac5b5d98f4d80e07f66e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8787fdc87d8d993a7b2f69f2759a8f94.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb48434bdcafb5e084fc0b6396cb9469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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