如图, 直线
,点
是
之间的一个定点,过点
的直线
垂直于直线
(
为常数),点
分别为
上的动点,已知
. 设
的面积为
.
,求
的面积;
(2)写出函数
的解析式;
(3)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1095c036b49c3327baaa2c3c7f746134.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5906277c957674134707aab74800728.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7502eee6f33e8c940dec63ab6473c52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e4a2591e8ce64a3aa1c8b496cabe28c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41748aed399abf1a221a1a7eb2455210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c69a23d106fd34aa17b22e9c9a8de36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41748aed399abf1a221a1a7eb2455210.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41748aed399abf1a221a1a7eb2455210.png)
21-22高一上·浙江杭州·期中 查看更多[2]
更新时间:2022-03-16 17:52:13
|
相似题推荐
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知函数
,(
,
,
)
的部分图像如图所示.
![](https://img.xkw.com/dksih/QBM/2020/8/16/2528958831779840/2529588777377792/STEM/16fe5461-e28c-4ab0-b87c-a19d697680c8.png?resizew=223)
(1)求
的解析式;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5e2a383cb47eb87493e86c8c40caf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13378be06b6b01bcad1d261ff14e87cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af87a22a39bd12c4734b0bdf1596b42a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://img.xkw.com/dksih/QBM/2020/8/16/2528958831779840/2529588777377792/STEM/16fe5461-e28c-4ab0-b87c-a19d697680c8.png?resizew=223)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/420f5cb2cfd1a8b1531dbb4df7c98611.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/151fef9e1440f05e35f4809fb5a27599.png)
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【推荐2】已知
,
.
(1)当
,
时,求
;
(2)若
,求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7790bd0495c094f19c02bd40bf2c10a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fac2300b4c2c0eff0ae7b1fbd4adf2.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/165734ecdbdebd02a74083575d63bdd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50c91027a95439547df08d5978cc5aeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c312a550c01dd5844803d959833d10.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b256d6f05a02b36a9fe5794cbe62f819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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【推荐3】已知函数
;
(1)求
在
上的最大值及最小值;
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b8f858ac1cd80df9fa0c070aef2d17.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c9aeed3c8c5a04e48d011c607f9142.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9433353d73641646a01f388feabd844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59808060fa3984e6343d9a69767c6b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9146fc0a63e5c14a8fa46573e60c07ba.png)
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【推荐1】已知
中角
、
、
所对边分别为
、
、
,且
.
(1)求角
的大小;
(2)点
在线段
上,满足
,
,若
,求
的长.
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f2efb7e4105b9746296f074697721d.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8cabcef1cee1213140371c499339864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35333abd7f02d663d15251bc5cbbf921.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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【推荐2】如图,
,
,
,
四个小朋友在草坪上游戏,根据游戏规则,
,
,
三人围成一个三角形,如
,
,
三人共线,
在
,
两人之间,
,
两人相距10米,
,
两人相距
米,
与
垂直.
![](https://img.xkw.com/dksih/QBM/2021/5/15/2721383313743872/2763299249856512/STEM/b241bfe3395c425fa3b8caf0782a788a.png?resizew=298)
(1)当
米时,此时
看
,
视角(即
)是
看
,
视角(即
)的2倍,求
的值;
(2)当
米时,求
看
,
两人视角(即
)的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2021/5/15/2721383313743872/2763299249856512/STEM/b241bfe3395c425fa3b8caf0782a788a.png?resizew=298)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aab883dc8dbf0075511c34dcea41ab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7951aa8045fd2e3ef93e098de17f93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
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【推荐3】已知函数
.
(1)求函数
的最小正周期;
(2)若
是第一象限角,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72838acfdc7027f768315a3abe2dbf11.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4addc4ed0e52dd0711ebb2142c879eb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/511366b3d52171408900f2f77bfeb372.png)
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解题方法
【推荐1】已知函数
.
(I)求
的值;
(II)求函数
的单调递增区间与对称轴方程;
(III)求函数
在区间
上的最值及最值点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a765402a5ae44180f4b50da5e637ca8f.png)
(I)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe9d6c7cb192d9560cd313c918b9f37.png)
(II)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(III)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f457df0f9d14437a7f0443bb297e6ee8.png)
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【推荐2】已知函数
.
(I)求函数
的最小正周期和对称中心坐标;
(II)讨论
在区间
上的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e254f1ddad3ec2b82964e15f94b6fc9c.png)
(I)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(II)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b77857e15ae11fc94a5e33bfc12d26.png)
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【推荐3】在
中,角
所对的边为
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d81258504e21deabb5569918dbecd80.png)
(1)求角
的大小;
(2)设向量
,试求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d81258504e21deabb5569918dbecd80.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)设向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de2c914b130add15151f8eb2e3749578.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2356d562e4e5f11e018bf7d408eb1bf.png)
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解题方法
【推荐1】在
中,已知角
的对边分别为
,且
.
(1)求角C的大小;
(2)若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6936cff1f127f9fd9c86c20ba53a3d84.png)
(1)求角C的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a67d1e586c133c181849bd0fa89d6bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐2】已知锐角
的内角
的对边分别为
在①
;②
;③
,这三个条件中任选一个,补充在下面问题中,求解问题.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/aab70f91-eb65-4577-9b00-fbd708f14b95.png?resizew=167)
(1)求角
;
(2)如图,边
的垂直平分线
交
于
,交边
于
,求
长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/832a6ae04b25ef0896bd607cdcda60ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2431027f0a2ed79be2a552448371037d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc365d7037709240df6c31f203bd4472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d949ab334438407b3b200325142b43a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/aab70f91-eb65-4577-9b00-fbd708f14b95.png?resizew=167)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)如图,边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7167d54ecdfd8ef1f4062627d01935f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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