已知函数
的图象的相邻两条对称轴之间的距离为
.
(1)求函数
的单调减区间;
(2)当
时,求函数
的最大值和最小值,并指出此时的
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba111f8645c0a71a168449781029b12d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de12bbd5097debc83d6a46364589748.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7028a5fa4d781d382ca3b73b74796e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e110a5c990e7147b026539eb48a837a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7028a5fa4d781d382ca3b73b74796e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
更新时间:2019-01-31 11:58:40
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【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cb22e4f9e6df5013e316d4ee7b7339.png)
(1)求函数
的单调递增区间
(2)当
时,求函数
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cb22e4f9e6df5013e316d4ee7b7339.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b392ae979e54da7e26bbc2d967a72666.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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【推荐2】已知函数
,求:
(1)化简成正弦型函数;
(2)单调减区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2a820f9933589d0fbba67787a7aa53.png)
(1)化简成正弦型函数;
(2)单调减区间.
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【推荐2】已知函数
的最小正周期为
.
(1)求
的值;
(2)求函数
的单调递减区间:
(3)若
,求
的最值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48e6bb2e8614badcf6f656e089183625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b87f4ef298bdeebf59a0d850aff72c.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb48434bdcafb5e084fc0b6396cb9469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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【推荐1】已知函数
的图象过点
,且图象上与点P最近的一个最低点是
.
(Ⅰ)求
的解析式;
(Ⅱ)若
,且
为第三象限的角,求
的值;
(Ⅲ)若
在区间
上有零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a34b8668b251837e0fb7cca6e35b5bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a9ce0e3a7fe6c38773a2f2c475f5c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0223877b4e82af4ffae90206c8ac4e6.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/514ea989808aab52d215d8d3374a3dee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/431958f3c498a409527bd0c573286260.png)
(Ⅲ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd1f6d72bfaeafa3460cd4dd8e00c938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f8a69569c596846cfe8b2e9ec14be2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
【推荐2】在①函数
的图象关于点
对称;
②函数
在
上的最小值为
;
③函数
的图象关于直线
对称.
这三个条件中任选两个补充在下面的问题中,再解答这个问题.
已知函数
,若满足条件 与
.
(1)求函数
的解析式;
(2)若将函数
的图象上点的横坐标缩短到原来的
,纵坐标不变,再将所得图象向右平移
个单位,得到函数
的图象,求函数
的单调递减区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99515741becca52f4df247e5125ee59.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4814cc69393408433ac56a06c8e86855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/720091d877ca5e2837b0f410fb99631d.png)
这三个条件中任选两个补充在下面的问题中,再解答这个问题.
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65d8071cdf4d8ff819a113dfa6f2e0df.png)
![](https://img.xkw.com/dksih/QBM/2020/11/23/2599220392239104/2599744105963520/STEM/5df7aa81f31943469d122c3bea4e1cbf.png?resizew=27)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c487fec20bd809e0baf5cb39afe8979.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
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【推荐3】函数
(其中
)的图象如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/45df2095-0f0a-40a3-b9f8-be51ce628dc2.png?resizew=259)
(Ⅰ)求函数
的解析式;
(Ⅱ)将函数
的图象向右平移
个单位后,得到函数
的图象.当
时,求
的最大值和单调递减区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec89c3bc454d209007c2b29baeeb3b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bb4e9c9147737ddde1518c3f3406b6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/45df2095-0f0a-40a3-b9f8-be51ce628dc2.png?resizew=259)
(Ⅰ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
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