已知向量
.
(1)求函数
的单调递减区间;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45cbcc9f548c3272f1a1eb67b7e3bd56.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0360dbdb267d658a3bb46d9939e8153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcfdf98213115dc7a6646d1417702a0e.png)
更新时间:2023-10-31 15:08:18
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】试探索
的值是否为与
无关的定值.若是,求出该定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f40eec5f65c38f0a80bc70ef65443b53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】在锐角
中,内角
,
,
的对边分别为
,
,
,且
.
(1)求角
;
(2)若
,求
周长的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff214d99784c6b23b7784bdaf3ed37a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671b087abb1d2692c8be5b16846c4690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2fdeba282b028321696be7f90f2cbfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3aa688caadfeb5bdf9c7dfecb5afa31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/791e789e228bb5055e1eb2cbd5815090.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671b087abb1d2692c8be5b16846c4690.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eebe90200db9f0a99c09e7604159ced9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff214d99784c6b23b7784bdaf3ed37a.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】已知向量
,
,
,
(1)若
,求
的值;
(2)若
,求
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d12b7a0dcaa4cee7c16d33d03654595c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f129ad3a250d06493658867fac543ec6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc8d23a542f27fe8b9dba1bf78a44c7b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069da5c624837df29947b7b8bf722097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aef681e03396ab434adb3d28bd26150.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32b5f56519aa4ba7c0440874d8e6007.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec103929f6865820eb2d2adcf866e037.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
解题方法
【推荐2】已知直线过点
,且倾斜角为
,椭圆C:
的左焦点为
,离心率
.
(1)求直线l和椭圆C的方程;
(2)求证:直线l和椭圆C有两个交点;
(3)设直线l和椭圆C的两个交点为A,B,求证:以线段AB为直径的圆经过点
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/843e3f8c3314d51a322c6122a13745c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27b3dff6cad2ca1f42dde078d4a06f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/234e7679481ec0d01c915b7fbb71891d.png)
(1)求直线l和椭圆C的方程;
(2)求证:直线l和椭圆C有两个交点;
(3)设直线l和椭圆C的两个交点为A,B,求证:以线段AB为直径的圆经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
名校
【推荐1】已知函数
的图象中相邻两条对称轴之间的距离为
,且直线
是其图象的一条对称轴.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/278eaef6-9540-4405-aa93-fd6e5f075fe9.png?resizew=317)
(1)求
,
的值;
(2)在图中画出函数
在区间
上的图象;
(3)将函数
的图象上各点的横坐标缩短为原来的
(纵坐标不变),再把得到的图象向左平移
个单位,得到
的图象,求
单调减区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6f4e6586553e8e4b5702031de734580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e60b49815c5c25b48e6c74d7077851a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/278eaef6-9540-4405-aa93-fd6e5f075fe9.png?resizew=317)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
(2)在图中画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3aae9c8988f4a48db69cad3308942c9.png)
(3)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/c8cf4f7c7e5775059b8c2df9c64cd67d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】已知函数
(其中
,
),该函数的最大值为2,相邻两对称轴之间的距离为
.
(1)求函数
的解析式;
(2)当
时,求
的单调递增区间和值域;
(3)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4e40ce074f9dd90a076240d3f683f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddcfe70fcf6c4adf6fd7b02911c2cd36.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6fffa55faca7531f93cabf05ded8455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e07a68e3b72f8c5dcd1308a9e4030c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e433d05c03c9978f58f04131f1e8df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/407a12339fbaccda23fd2ff4fe2cb163.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐3】已知函数
,若
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.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f06f210e6a2d010063a07c1d359fb61a.png)
![](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)
您最近一年使用:0次