1 . 记
内角
的对边分别为
,
,
,已知
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f23d9f62826855e3caf26d7d4640c1c.png)
(1)求
;
(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/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/ac1143aa4477719481003ec4cc75a565.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f23d9f62826855e3caf26d7d4640c1c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7bd466d65409c10c1a1ce60a3c5ea1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解题方法
2 . 如图,在
中,
,点
分别是
的中点.设
.
表示
;
(2)如果
,请判断
的位置关系?用向量方法证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b1c68c71dedc4f7767be51893e60924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e675a92cad72c65aa4071b9d9e226090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2c1c9f638336bdc11d3ccc135b5029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1eea45a8f50799dbe8ac66d5b920cdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0f320bdecd8a360273f0baabe8d4b27.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac476d780de3ed6aa25efa87f661ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de32260ba2cb998f3ffb8449cdaf7708.png)
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3 . 某种“笼具”由内,外两层组成,无下底面,内层和外层分别是一个圆锥和圆柱,其中圆柱与圆锥的底面相同,圆柱有上底面,制作时需要将圆锥的顶端剪去,剪去部分和接头忽略不计.已知圆柱的底面周长为
,高为
,圆锥的母线长为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5ede7b9fada0d3cecb460fa7168091.png)
(2)现用
的纱网材料制作这种“笼具”,问至多可以制作多少个“笼具”?(假设纱网材料没有浪费,结果保留整数.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78a685582860802d0f97b93250b6ebf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b813acaaab86dad65b025e170520604.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5ede7b9fada0d3cecb460fa7168091.png)
(2)现用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8b41c109f1017339baeb359c154c881.png)
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解题方法
4 . 已知函数
,且
在
处的切线方程是
.
(1)求实数
,
的值;
(2)求函数
的单调区间和极值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/082ece762ffbf92921f4685d45f5166d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f31cba6e8a2a234dfb5b2f7e909b3a.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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解题方法
5 . (1)已知P是直线
上一点,
(
为实数,且
),点
的坐标分别为
,求点P的坐标
.
(2)已知平面上三点A、B、C的坐标分别是
,小明在点B处休憩,有只机器狗沿着
所在直线来回跑动.当机器狗在什么位置时,离小明最近?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a949c00526fddf435423272cf10f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b5bb87687b19fbc48be9068db60da7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c87f4c40e50504adaface510404dbfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/594fa9a4bce1ed5fd27e4cb55d63cf0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf8be368791da55817b64a14a89fcf24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
(2)已知平面上三点A、B、C的坐标分别是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de9c2a68bb128cdd92cdd103b0fedc03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
名校
解题方法
6 . 已知
.
(1)若
,求
的值;
(2)若
,求m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82fc7a06b9d4e51b7c559c1fd1f79069.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aed39f5aca78934fb383402433fe549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a766e037468d9c6e4bade3de283ae8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87f34b1ded9bd3ee76b58c5b3fe3fcca.png)
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7 . 已知向量
,
满足
,
.
(1)若向量
,
的夹角为
,求
的值;
(2)若
,求
的值;
(3)若
,求向量
,
的夹角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce9883f16cdef5fb87fb9d6a9897d113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db24e47304fec964e8cb9278280046bb.png)
(1)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854e16eb319ee454088f5b527cf6c4d5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/466821bb75badcfa72f433d106eaf246.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/596a3ee5d8473fc6619ea7730e13325b.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b904789c43cb34d62bc40a4d8773735d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
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8 . 已知函数
的部分图象如图所示.
的解析式;
(2)求
在
的值域;
(3)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c74ae8f9d9b58a22b74245a4d555b211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2564e31cc7ac73e5f43c5ef1a56027bb.png)
(3)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be1d8c6384d7fabddb693b2b7fcdf4a.png)
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9 . 已知函数
.
(1)求函数
的最小正周期;
(2)求函数
在区间
上的最小值和最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6891cfb44d44f17bb79b82e85ab79fb8.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7466d2055b1e49baea19e7e13cf97b77.png)
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解题方法
10 . 如图,已知AA1⊥平面ABC,BB1∥AA1,AB=AC=3,BC=2
,AA1=
,BB1=2
,点E和F分别为BC和A1C的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/23/558718a4-fa11-4963-99fb-916c3b8b18de.png?resizew=122)
(1)求证:EF∥平面A1B1BA;
(2)求证:直线AE⊥平面BCB1;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/23/558718a4-fa11-4963-99fb-916c3b8b18de.png?resizew=122)
(1)求证:EF∥平面A1B1BA;
(2)求证:直线AE⊥平面BCB1;
您最近一年使用:0次