已知
,
.
(1)当
时,求
的值域;
(2)若
时,
有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e68898b6d4bcf1330d19f8a98435d584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b63a87545fb8a1913ad16e376d42bd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4509817be39bef4bcde115996ee39e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2020-02-19 21:35:42
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】已知复数
的实部与虚部的差为
.
(1)若
,且
,求复数
的虚部;
(2)当
取得最小值时,求复数
的实部.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/941f3c898bcdf86f1897793794931724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e0aaf3077f789265703afda6be5e019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b438e4fa9e78123cff54ac20fc136af5.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a74dba22ac320b4b9a020d7ec81500b.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
.
(1)若
,求
的最小值,并用解析式
表示;
(2)求
在
上的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adaa5b750211a0524fd66498aa0e8a57.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bcd78ddf3856a9100e71ee5655a0c0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3466b71d1d9117438ed50388a57d9397.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3466b71d1d9117438ed50388a57d9397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7175752f2c5c4e69ae51d59b31d9cd5.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】如图,已知
是
之间的一点,点
到
的距离分别为
,且
是直线
上一动点,作
,且使
与直线
交于点
.设
.
(1)若
,求
的最小值;
(2)若
,求
周长的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3de8e1438d5c99eb8902fa0f44a0ce35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b721afb477b5e952b82ce210a85cc4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9706bd9d083d7a6f4aaebb880b0ff6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822ba132ca9dd0d4a050659aef3c9b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c499d3ef329f85e59fd72dec6f453bbc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/b84e0eb4-68ca-4b72-b458-3e05e7aa985f.png?resizew=170)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96144368b1b5ca55648a797580f022e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80693c34cb19b4ab4a7d0c1f177674d3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93eb9fe4858b9c56f43137b0e2648dd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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
,
.函数
的最小正周期为
.
(1)求函数
在
内的单调递增区间;
(2)䒴
使得不等式
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06dbc9544faff3224ae8200d9f0eabf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd67cb0a471af868b193f464ddb6be1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3aae9c8988f4a48db69cad3308942c9.png)
(2)䒴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa1139108fba5074a87bd17e4e2c673.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4768d9cba38658740b65c62d6237c72b.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)
解题方法
【推荐2】已知函数
,且
时,总有
成立.
(1)求
的值;
(2)判断并用定义法证明
的单调性;
(3)若关于
的不等式
在
上有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbceffd6fb3d230379384a0bb8b86acf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd1db6c94b94afc372212a81cc1f4dd9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)判断并用定义法证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64a82f9ed1fed1e3aa42434da4671b42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790daaa89fc9d093f45023becf765697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次