解题方法
1 . 如图,边长为2的菱形
中,
,
、
分别是
,
的中点,
为
、
的交点,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5851c1ccd9937b6783fac09e300b8bc4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/8/268c3739-21ce-4703-91cb-929cc7acf246.png?resizew=221)
(1)试用
,
表示
,
,
;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5851c1ccd9937b6783fac09e300b8bc4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/8/268c3739-21ce-4703-91cb-929cc7acf246.png?resizew=221)
(1)试用
![](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/bfd0cecf5c102254b9755e42a80c3948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/205b7476ab0bad9c1e79ef0c74dbd703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/511bc9e4a3b606a11d01e0c1e6d275cc.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c70ceda5e8a6f1a790be80d1f71842.png)
您最近一年使用:0次
解题方法
2 . 椭圆
的左右焦点分别为F1,F2,离心率为
,过点F1且垂直于x轴的直线被椭圆截得的弦长为
,直线l:y=kx+m与椭圆交于不同的A,B两点.
(Ⅰ)求椭圆C的方程;
(Ⅱ)若在椭圆C上存在点Q满足:
(O为坐标原点).求实数λ的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(Ⅰ)求椭圆C的方程;
(Ⅱ)若在椭圆C上存在点Q满足:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d091fb60e43f86edfb767a28518d5bda.png)
您最近一年使用:0次
2016-12-04更新
|
453次组卷
|
2卷引用:2017-2018学年黑龙江省黑河市孙吴一中高二 (上)期中数学试卷(理科)
10-11高一下·黑龙江鹤岗·期中
真题
解题方法
3 . 已知函数
的图象与
轴分别相交于点
,
(
分别是与
轴正半轴同方向的单位向量),函数
.
(1)求
的值;
(2)当
满足
时,求函数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a26cbfd351d1af2add79d6315ad31c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda0b2901ab7cccd83e408e381f2df70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f03844a4d49eadf4157de7c7c339b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee74c6911296526d3f85b586d3d4161.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceee0ff5c929d67de3c294e027c9087.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acda6b6464db27e1ec18a1522406d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac93e34d8935fe1c54e5263d514f242a.png)
您最近一年使用:0次
12-13高一上·广东汕头·期末
4 . 设平面三点
.
(1)试求向量
的模;
(2)若向量
与
的夹角为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11228a07d4e58f9cd88592edf2b24851.png)
(1)试求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7a3646b303fbd4ce2dbe768d8a0aae9.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/547fe456ec0fb6da86350d14e95dae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f9ee8474d63b06a57c3cd612c7e87d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb49947eb370e18720a191b18796c6f.png)
您最近一年使用:0次
2016-12-01更新
|
1041次组卷
|
7卷引用:黑龙江省佳木斯市第八中学2022-2023学年高二上学期期中数学试题
黑龙江省佳木斯市第八中学2022-2023学年高二上学期期中数学试题湖南省三湘名校教育联盟2020-2021学年高一下学期期中数学试题(已下线)2011-2012学年广东省汕头市达濠中学高一上学期期末考试数学海南省三亚华侨学校2019-2020学年高一下学期开学考试数学试题陕西省渭南市富平县2020-2021学年高一下学期期末数学试题(已下线)9.3.2第2课时 向量数量积的坐标表示(备作业)-【上好课】2021-2022学年高一数学同步备课系列(苏教版2019必修第二册)陕西省延安市宜川中学2020-2021学年高一下学期期末数学试题
9-10高一下·黑龙江·期中
名校
5 . 在锐角
中,已知内角
、
、
所对的边分别为
、
、
,向量
,且向量
,
共线.
(1)求角
的大小;
(2)如果
,求
的面积
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.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/8160510b3a3999d3283f71750bcbb958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/750402eef953e16a0bbfb7d471562aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074052868068e1d6119a01685888aff8.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53501558756cd28b30ce6a75d4c0c5d1.png)
您最近一年使用:0次
2016-11-30更新
|
834次组卷
|
5卷引用:2010年黑龙江省哈六中高一下学期期中考试数学试题
(已下线)2010年黑龙江省哈六中高一下学期期中考试数学试题(已下线)2013届重庆市高三九校联合诊断考试文科数学试卷2016届安徽省合肥市八中高三上学期第一次段考理科数学试卷江苏省盐城市第一中学2020届高三下学期六月第三次模拟数学试题四川省眉山市仁寿县铧强中学2021-2022学年高二上学期期末模拟理科数学试题