1 . 设向量![](https://img.xkw.com/dksih/QBM/2015/9/16/1572234484342784/1572234490273792/STEM/de84cfce60784f09992ee9154dc9b44d.png)
(1)若
,求x的值;
(2)设函数
,求
的最大值.
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572234484342784/1572234490273792/STEM/de84cfce60784f09992ee9154dc9b44d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f10f2962b55df3ce1846a607300420a.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff04c1e4068aa3957f8e175fa52d2b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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2 . 在矩形中
中,
,
为动点,
的延长线与
(或其延长线)分别交于点
,若![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/ee5b0dbc7a2f495db0d13151852e9661.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/ffa6c83c497b4019a7c715ee098a7d94.png)
(1)若以线段
所在的直线为
轴,线段
的中垂线为
轴建立平面直角坐标系,试求动点
的轨迹方程;
(2)不过原点的直线
与(1)中轨迹交于
两点,若
的中点
在抛物线
上,求直线
的斜率
的取值范围.
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/698d729828834d2ba8e926c3fe7daf26.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/684bca5ddc7a4c29ae7d807ab97604ca.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/6ec7c334c2274f16a339a53b806a5fd6.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/bb770f4485064886a4cc3d389b2d7dcb.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/c27c8b25a5fd478a8be7d9a8a07b76d6.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/07304815ffff4825b2a9899545232f54.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/ee5b0dbc7a2f495db0d13151852e9661.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/ffa6c83c497b4019a7c715ee098a7d94.png)
(1)若以线段
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/c27c8b25a5fd478a8be7d9a8a07b76d6.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/ed0b8dbe05aa4d2f98ba45cd1709d2ab.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/c27c8b25a5fd478a8be7d9a8a07b76d6.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/87592789f4024d7faf7d1ade9808a28a.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/6ec7c334c2274f16a339a53b806a5fd6.png)
(2)不过原点的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/4ac436dd485e4dc3adbc6a667aae843d.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/bf5fd565bcd048c4a602e9ce5a8b560f.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/8f62c4600559425393b435aeb444c21e.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/e6f310679d6b493abc30b03f19e85d28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572231896825856/1572231902330880/STEM/52fc09a8bb4541329d79d18b878fd1e9.png)
您最近一年使用:0次
2016-12-03更新
|
297次组卷
|
2卷引用:2014-2015学年江西临川一中高二下学期期末理科数学试卷
解题方法
3 . 已知
,
,
分别为
三个内角
,
,
的对边,且
.
(1)求
的大小;
(2)若
,且
,
,求
的值.
![](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/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/507cf9d2af6e9da899ada8350a3ba038.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e876b53581904085bbc4e00fad0c718f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46196aec06c25d5c8f9b1d3a8f50a889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783d6adfa8fb1352679c5185258d842a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c93a7bf0682398f09fa36fd212d9f2.png)
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4 . 已知
,函数
,
(Ⅰ)求函数
的最小正周期、最大值和最小值;
(Ⅱ)求函数
的单调递增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdd261b3dadd4f347332ac87f6792f49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5213fce9d59461065110450f5f4f52ce.png)
(Ⅰ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅱ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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5 . 已知动点
到点
的距离比它到直线
的距离小1,记点
的轨迹为
.
(1)求曲线
的方程;
(2)过点
的直线
交曲线
于
两点,若
,求直线
的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63309dbc3612815f6dbdee23d9a10adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a858da0ca2754da9f1b93e3574d2401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63309dbc3612815f6dbdee23d9a10adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ece97ea690eaa3f6eab56d71b1a869af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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解题方法
6 . 在三角形ABC中,内角A、B、C的对边分别为a、b、c,若
=
,
=
,且
.
(1)求角B的大小;
(2)若
,求△ABC的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0c398ef888cab14a0805a46f59150e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ef4d96d5e33c29ded9e703e7b77225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/759bc4eeb0c937af667093c416ed83bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/013aff21ad201981825e7c4759c5418a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c681b2c5fddb33c3b066ab49cb9afc42.png)
(1)求角B的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c853b0340c25352b61a8b1b8c35d99e.png)
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7 . “坐标法”是以坐标系为桥梁,把几何问题转化成代数问题,通过代数运算研究图形的几何性质的方法,它是解析几何中是基本的研究方法. 请用坐标法证明下面问题:
已知圆O的方程是
,点
,P、Q是圆O上异于A的两点.
证明:弦PQ是圆O直径的充分必要条件是
.
已知圆O的方程是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6ff81aedbefa935da289dc632e78eb.png)
证明:弦PQ是圆O直径的充分必要条件是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abdcad3b7a9bbb95bd573a6124b05226.png)
您最近一年使用:0次
2016-12-03更新
|
325次组卷
|
2卷引用:2014-2015学年内蒙古赤峰市宁城县高二上学期期末考试理科数学试卷
8 . 已知过点A(0,1)且斜率为
的直线
与圆C:
相交于M、N两点.
(1)求实数
的取值范围
(2)求证:
为定值
(3)若O为坐标原点,且
,求K值.
![](https://img.xkw.com/dksih/QBM/2015/2/4/1571975398850560/1571975404519424/STEM/b7efc9d0982e4ccc822471b573523742.png)
![](https://img.xkw.com/dksih/QBM/2015/2/4/1571975398850560/1571975404519424/STEM/bd8e8a69cd1b40818e460a3832c60e3b.png)
![](https://img.xkw.com/dksih/QBM/2015/2/4/1571975398850560/1571975404519424/STEM/13d64e25301b42a7baefd3f2d7d0fb6a.png)
(1)求实数
![](https://img.xkw.com/dksih/QBM/2015/2/4/1571975398850560/1571975404519424/STEM/b7efc9d0982e4ccc822471b573523742.png)
(2)求证:
![](https://img.xkw.com/dksih/QBM/2015/2/4/1571975398850560/1571975404519424/STEM/e4bc370fe1394756bd90048b0ab1e0df.png)
(3)若O为坐标原点,且
![](https://img.xkw.com/dksih/QBM/2015/2/4/1571975398850560/1571975404519424/STEM/b61380d6eff04ba8bbaf8a65ce4d01d6.png)
您最近一年使用:0次
9 . 已知向量
,向量
,函数![](https://img.xkw.com/dksih/QBM/2015/1/5/1571948148891648/1571948154683392/STEM/032248d2aae94016aac060f07085c753.png)
(1)求
的值;
(2)求函数
的最小正周期及单调递增区间.
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571948148891648/1571948154683392/STEM/48e31bb8f5664c5fa83e9dc1345dda8b.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571948148891648/1571948154683392/STEM/154e7ca108b745988619fa8bf3c69f6d.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571948148891648/1571948154683392/STEM/032248d2aae94016aac060f07085c753.png)
(1)求
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571948148891648/1571948154683392/STEM/119305c6c5df4dd384b71c586ec5c8b5.png)
(2)求函数
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571948148891648/1571948154683392/STEM/e5befdc3ca0a4b5a826fdf9c0e75e3e1.png)
您最近一年使用:0次
解题方法
10 . 已知向量
,
,其中
随机选自集合
,
随机选自集合
,
(1)求
的概率;
(2)求
的概率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb834ea5b360376b44f415a39c2c1e4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee264c98e64b8683af7ccce197e5608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45f5ba48254158d0e38029f6157f9a3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd5f755829113a246c04e414b313d19.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d76ee2e81f447f84a3e0b39c0388ef.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
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