名校
解题方法
1 . 在
中,角
对应的边分别为
,已知
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
______ ,
的面积为______ .
![](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/8d12de0fe32eedb8fab4fd3a50dfa7a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2bc8adc993cad5553d66285b5971f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2 . 给定集合
,定义
中所有不同值的个数为集合
两个元素的容量,用
表示.
①若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c79575d2911fe790835bef641962b471.png)
___________ ;
②定义函数
其中
表示不超过
的最大整数,如
,
,当
时,函数
的值域为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
____________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da95b70e1c8b13037f6999c76d129bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5a1df9b613ef07dc221b8df9d466fd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7646e64bdfe73f63d856376e1efb3187.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36113af7d0b0b4cf823babb95fb7536d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c79575d2911fe790835bef641962b471.png)
②定义函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36304502dd9ae85a33ed38d59c655ea5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5971b06a0758bb830c4e09a25bb665a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/933ad926785d6302eb8a4eaac35c46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52aed199a18e44830cdc233f9a2df98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89a8274d5be7f2a47d9f8cfc8cbe57b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
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3 . 已知点列
,其中
,
,
是线段
的中点,
是线段
的中点,……
是线段
的中点,…….记
,则.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
______ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292db1408ccce5ca3ac3f5e4bb233171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62b6ab454199d2738ea1b5cefb133d50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/204e5160ff110a19878e4fae639319e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473913c0887bb64d386f4c02f1853452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e47cd514b2920609e3781c87df6ab70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11603c89c66f064b263af841dae023f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a4f2bafc3346d14a8967ce2546157d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c775fc62e7696028a9184e5212f0446.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
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名校
解题方法
4 . 在
中,
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
______ (用弧度制表示),若
为
的中点,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f86271ee2b1858cf3f54d57d8473dad.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f29c36db60dd12810ad2e90989d422bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89cae28c97255a8d5640377f39be2ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f86271ee2b1858cf3f54d57d8473dad.png)
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解题方法
5 . 在△ABC中,
,P是MC的中点,延长AP交BC于点D.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/436830896877e1a9111e180d76da1432.png)
________ ;若
,
,则△ABC面积的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d74b1d0480790400a9223e4437afdba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3eb017225ca281cdde9cf7edac2ed06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/436830896877e1a9111e180d76da1432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
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名校
6 . 一般地,对任意角
,在平面直角坐标系中,设
的终边上异于原点的任意一点P的坐标为
,它与原点的距离是
.我们规定:比值
,
,
分别叫做角
的余切、余割、正割,分别记作
,
,
,即
,
,
,把
,
,
分别叫做余切函数、余割函数、正割函数.
(1)已知
,则
的最大值为_______ ;
(2)设
,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4e7bf9200b351a259ddfc6c0266129d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa2d7c084731df9cdabf1f0af121e3e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fee1e0f6c44b3027d0d6f8d9396f209.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d494c34104f679bdbea537164f1907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e609ecb22257c1ca2fe78b1dc2e62141.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48bd75362790c061d70f80de8febc3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b57070a05279ad5e576d13fb9c1bef2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851b7eec8ee522611f6b96a60ab9fc63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147f65043356b475c5c2bba102958807.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd5cac6f59b3e1405a3b64d13c88e8a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/175c64c2a2393743bde92b3e46df42cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7688d35e68414fa995babd7437e678b.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1cf8cc0ca8fbbc8863fb416e25730f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bde963bde77dedd5e9859b5a4f5e49e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
您最近一年使用:0次
名校
解题方法
7 . 如图,在平面四边形
中,
,
.若
,则四边形
的面积为______ ;若
的大小可变化,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc8ebac9bde6bb6a2113edb90bf963fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8eab10e24f9b016f46995a895237929.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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8 . 将正方形
分割成
个全等的小正方形(图1、图2分别给出了
的情形),在每个正方形的顶点各放置一个数,使位于正方形
的四边及平行于某边的任一直线上的数都分别依次成等差数列.若顶点
处的四个数互不相同且和为1,记所有顶点上的数和为
,则有
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/022205c82846dfa3420c67402a278fea.png)
______ ,…,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d64205bb7d470602fb525b02e72a81b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/188ba12941ea122a7775a4999e129161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d15d4afcc5736bb747eeffcffd3f4464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e345e86daf74312a6992e5d1c3f47f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cf8c7f5f6a35f7ed88271a077619aef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/022205c82846dfa3420c67402a278fea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d64205bb7d470602fb525b02e72a81b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/29/8a0dc8d3-051d-4666-9a45-8e1c699ed7bd.png?resizew=254)
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解题方法
9 . 已知
均为正实数,函数
.
(1)若
的图象过点
,则
的最小值为______ ;
(2)若
的图象过点
,且
恒成立,则实数
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c934a3408d4197d9b43c8131e037fa.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57f879f6e8df7d5fb261328806260b3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e0ac18a707568998b01e6e2a4f58e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/224c096cec09ea0598e8676ecf618c70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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名校
解题方法
10 . 已知
中,
,以AB为一边向外作等边三角形ABD(如图所示),且
.当
时,
的值为______ ,当
时,求
的值为______ .
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/20/4215b0d3-1a97-402b-a11f-27389f24e903.png?resizew=185)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b0f01044910aa5285a600c1eef2fa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab176715c3ae8e4e2ff80a0a5980f029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d285e611381e448100f126c4d7a9b78.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/20/4215b0d3-1a97-402b-a11f-27389f24e903.png?resizew=185)
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