如图为函数
的图象的一段.
![](https://img.xkw.com/dksih/QBM/2021/12/17/2874604287229952/2912217645801472/STEM/ead826b7539d4043893baed857ef6e21.png?resizew=138)
(1)求其解析式;
(2)设
的内角
满足
,若
,求
边上的高
长的最大值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a8fc6e2c711ba04dca7646137486fc.png)
![](https://img.xkw.com/dksih/QBM/2021/12/17/2874604287229952/2912217645801472/STEM/ead826b7539d4043893baed857ef6e21.png?resizew=138)
(1)求其解析式;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a30cdeccc312028502c30ca324d62e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d3249bb162f76416a37c6964c21304.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
更新时间:2022-02-08 22:24:52
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适中
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【推荐1】已知函数
有最小值-1,最大值3,其部分图象如图所示:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/091738b7-d95f-4a9a-b2f2-ad0858b68e13.png?resizew=172)
(1)求函数
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(1)求函数
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(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddec17b39c5317b4552aec538d86f13e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68008efbf6ccaac449090009fabcf34a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ba3087bdb84efa9465d655720b730c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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适中
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名校
解题方法
【推荐2】已知函数
的部分图像如图所示.
(1)求
的解析式;
(2)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21bb1c58cb05bb7e76f082fffacf2e26.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/7/37c236e8-bcb9-4796-bf45-7784333addf6.png?resizew=169)
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(2)求不等式
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解答题-问答题
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适中
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【推荐1】如图,在
中,已知
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.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/5989cd7b-2d83-4602-aedc-06906f298324.png?resizew=181)
(1)关系式
是否成立;
(2)证明或者说明(1)中你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93063e500b2429d267fb4054efe90cd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/5989cd7b-2d83-4602-aedc-06906f298324.png?resizew=181)
(1)关系式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd0ab63415a5660ae68a8d6eb7e4bb18.png)
(2)证明或者说明(1)中你的结论.
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适中
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【推荐2】已知
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(1)若
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(2)在△
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7846c000b2dc2c62b1cca1b8b7ca6a0d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f26ae54737caa621832628479fa0de30.png)
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(2)在△
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b409809543bae9f5e231a83e515dbbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
的最小值.
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【推荐2】已知向量
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上的投影数量为
,求
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![](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/5b7b5830f193cc3d5e0b3bf50bf7689e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edba420e031770b01d4ca0a505c209fd.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cc523bdaf222089feb5befd43753ed7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bca35e52b8430246a1cf96e9e617cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85e687ec8f6c55f9a49af42c05c31538.png)
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适中
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名校
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【推荐1】如图,某超市的平面图为矩形ABCD,超市门EF在边AD上,其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01325ee7fc8fdcf8e09179ef4ae13a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/47365362-1024-40be-b1c8-e66ef4c02486.png?resizew=179)
(1)求
的正切值:
(2)若要在
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安装安防摄像头,使得对超市门的摄像视角
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01325ee7fc8fdcf8e09179ef4ae13a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/47365362-1024-40be-b1c8-e66ef4c02486.png?resizew=179)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd94dd51562ecbee6edd4265326b765.png)
(2)若要在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b89403a4db68423b83136d2cbff6225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
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【推荐2】有一个农场计划用铁网栅栏建设一个矩形养殖棚,如图,养殖棚的后面是现成的土墙,其他三面用铁网栅栏,侧面长度为
米.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/d44c38f4-6048-4628-9835-1f5577cf5c8f.png?resizew=269)
(1)若铁网栅栏长共
米且养殖棚内部两侧和前面都要留出宽
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①求养植棚的有效养殖面积
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(米)之间的函数关系式,并求有效面积为
(平方米)时的
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②若后面现成的土墙足够长.求怎样设计,才能使有效养殖面积最大.
(2)若要使建设的养植棚面积为
平方米,铁网栅栏建设费用为
元/米,那么,当
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最小,并求出
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/d44c38f4-6048-4628-9835-1f5577cf5c8f.png?resizew=269)
(1)若铁网栅栏长共
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f959e5f8d89390f0f136f6acc9f6fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
①求养植棚的有效养殖面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3cff88abe015893ed215271bdc8f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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(2)若要使建设的养植棚面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f0e3992efedab109b99e6e172e6238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90dd550e1ad9bbf01687ffb4aab788ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
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