已知函数
,振幅为2,初相为
.
(1)若函数
相邻的两条对称轴的距离为
,
①求
的值以及函数
的单调递减区间;
②求
在区间[0,
]上的最值,以及相对应得
的值.
(2)若函数
在区间
上恰有5个零点,则
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daea7ed318cd59c8a1ce9edfb3905b20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49f8a63ddbca52039fa9ab44cda6b29.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49f8a63ddbca52039fa9ab44cda6b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6634cfe95a78d7a865453f3847583afd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d03919ba25c30dbb9cd4a4169ca54f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
更新时间:2023-06-14 09:46:10
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】已知函数
,若函数
有三个不同的零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aee43175b2dcaac1ac363f83f29026b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616aae752b6508ad661bd0c2c13be512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】已知二次函数
.
(Ⅰ)若
且函数
的值域为
求函数
的解析式;
(Ⅱ)若
且函数
在
上有两个零点,求
的取值范围.
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152601600/STEM/8bc30dbfb2d24963896b482f5652bda7.png)
(Ⅰ)若
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152601600/STEM/09166e76fb924b3a8b11556246aa645a.png)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152601600/STEM/547101a61ddc447db652edc664ddc9af.png)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152601600/STEM/3403b22856de432cb9e82a965773bb24.png)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152601600/STEM/17d681f9f40143aa82842aeb920bfe31.png)
(Ⅱ)若
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152601600/STEM/52243379dd5a4b4fa753c2d4de39cb69.png)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152601600/STEM/17d681f9f40143aa82842aeb920bfe31.png)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152601600/STEM/0ad7edd892ba4a3d99959c0d6b292ec0.png)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152601600/STEM/0618b125006c494baf73895f49bf0126.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】在①函数
;②函数
;③函数
的图象向右平移
个单位长度得到
的图象,
的图象关于原点对称;这三个条件中任选一个作为已知条件,补充在下面的问题中,然后解答补充完整的题.
已知______(只需填序号),函数
的图象相邻两条对称轴之间的距离为
.
(1)求函数
的解析式;
(2)求函数
的单调递减区间及其在
上的最值.
注:若选择多个条件分别解答,则按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af7ab7a508ed4b65a4bb167e2fb6e035.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e4c77bd9072ebbf6564c47041c92366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f910381d5771f738db2fc5db4a8d1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cdaf49f9611922348aa2784465da614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
已知______(只需填序号),函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
注:若选择多个条件分别解答,则按第一个解答计分.
您最近一年使用:0次
解答题
|
适中
(0.65)
名校
【推荐2】已知函数
.在一个周期内,当
时,
取得最大值6,当
时,
取得最小值0.
(1)求函数
的解析式;
(2)求函数
的单调递增区间与对称中心坐标;
(3)当
时,函数
的图象与
轴有交点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bbc2543e5ed84aa3b9ffd2853c43da7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/720091d877ca5e2837b0f410fb99631d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b283eb08db6f602ede1ae542c5e3662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb554859a02fcc1c5d79b7ba1ddbd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22d10a3488ed85c3852cc0578a1e6cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐3】已知函数
,满足
,
,且
最小值为
.
(1)判断函数
的奇偶性.
(2)当
时,若函数
在
的最大值为2,求实数a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c6571cdf9bed61c3eeeeb00c134fee0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e5a6eacb35c89335ecd7b5fe96340e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef8fbafad67cc4e67a4fabecb036bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e648ebd598725b490a973c4ebc89a9bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c49e05d963f46bbe46b707b452ac9f6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f0104a0b9a94b85b4776ac8b1ede2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/193ca572fecf1b7de97f517e1842f551.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】在平面直角坐标系xOy中,已知向量
=(
)
=(cosx,sinx),x∈(0
).
(1)若
求tanx的值;
(2)若
在
上的投影向量长度为
求x的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64bd826bd0fb46bd7094dced895ce607.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ceae6915bffacb8e363e90f3211a3b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58dc33466acc33186c28028d4289bd52.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a22a9e2b1d636054a5e9d4ee8ba1ecca.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18b9055334fbdfc0bb53e2531a34397.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】设函数
.
(1)求函数
的最小正周期及
图象的对称轴;
(2)在锐角
中,若
,且能盖住
的最小圆的面积为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3bd278db18d612d89271e7938643c5f.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)在锐角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ab1e6107f2370b5bb2580b23bfcf0b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6d831223c3c4ae2ee718118f97a06d6.png)
您最近一年使用:0次