已知函数
,
(1)若
,求
的取值集合;
(2)求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032e6bb5ee9b42b9989f464e88b90448.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50866229ec5a3640fb250f9bd2192b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
更新时间:2020-02-18 11:17:24
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解答题-问答题
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适中
(0.65)
名校
【推荐2】已知
, 且
.
(1)求
的值;
(2)若
,
, 求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ef918ea4e2899066e5c2204f94cd09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65b6c42393fae47c51101713167ff71.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9146fc0a63e5c14a8fa46573e60c07ba.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f57c2cb50810b71b91dbcceb6eaa6969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c154daf98ee6852724f392bec2d4ef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.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
.
(1) 求函数
的最大值,并写出相应
的取值集合;
(2) 若
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e00c6b83c3bbc0e2173d9978cf92699b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/740710b92f3f3af8f447d1a12799ef81.png)
(1) 求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2) 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a2868a12e78be5cdf4a7ba30d70a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281805b9dfe2162215dfe6b5ad6d7b03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.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】如图所示,在一块面积为
的圆心角为
的扇形
空地中(如图1:扇形
,
),要建设一座长方体的高楼(如图2:长方体
).由于建设需求,点
需在弧
上(如图3).为了消防安全,楼层建设不能太高,
与地面
所成的角最大为
.
(1)求楼高
的最大值;
(2)求这座高楼体积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b908f97f9ee9f3de1361224345527e9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/161ea3eaa2e28747507c1c0e4a7b39f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/161ea3eaa2e28747507c1c0e4a7b39f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deb70f7f683825c3a5e1dcea6bfe4463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec275f823ae17afdba53301fcbd2aa43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6c71a0da6a878a5b12bf8a8e784645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/11/655ef0e1-a831-4fb9-ad8c-6684cc6a78c7.png?resizew=495)
(1)求楼高
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
(2)求这座高楼体积的最大值.
您最近一年使用:0次