名校
解题方法
1 . 已知椭圆
的左右焦点是
,且
的离心率为
.抛物线
的焦点为
,过
的中点
垂直于
轴的直线截
所得的弦长为
.
(1)求椭圆
的标准方程;
(2)设椭圆
上一动点
满足:
,其中
是椭圆
上的点,且直线
的斜率之积为
.若
为一动点,点
满足
.试探究
是否为定值,如果是,请求出该定值;如果不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef79f375ce0a9b834c9e2b6be0671101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c74e2c4bff67edf76c9d2ef7b18ac2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98d107e77106ff1a9cb76b504bbc99bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10e8abf8690e4b129466ddb918bcc94.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)设椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee5f37f860e9598aaf99568ac1d4380c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a5e484dfef494d27bc35ae7b8cf75d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602baac86c2b1668ecdfadc8a5948885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/462c0b40f74722835ae5ec82b4a09db2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9074ee272076b28944f1629a775ba3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0d6284a7f7c269cb7157cfb43fe3e7f.png)
您最近一年使用:0次
2020-10-23更新
|
829次组卷
|
7卷引用:江西省萍乡市上栗中学2022-2023学年高二上学期期末数学试题
名校
解题方法
2 . 已知
中,角
所对的边分别是
,
,且
.
(1)求角
;
(2)
,
为
所在平面内一点,且满足
,求
的最小值,并求
取得最小值时
的面积
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f5573b30734d65648f61c0a94c98de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b19988d792b5252222f0a7acf7ef5fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55f05b68ee6ebee0ae7b781406986047.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d6f8316dc31ee7aebf402ccb306fcf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9524e3810e06dc781285f1289e75d653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
2020-04-27更新
|
1955次组卷
|
4卷引用:江西省上高二中2020-2021学年高一下学期第四次月考数学(理)试题
江西省上高二中2020-2021学年高一下学期第四次月考数学(理)试题2020届百校联盟高三4月教育教学质量监测考试(全国Ⅰ卷) 数学(文)试题(已下线)第四单元 三角函数与解三角形(B卷 滚动提升检测)-2021年高考数学(文)一轮复习单元滚动双测卷四川省攀枝花市第三高级中学校2021-2022学年高一下学期第一次月考数学(理)试题
真题
解题方法
3 . 在直角坐标系
中,已知点
,点
在
三边围成的区域(含边界)上,
(1)若
,求
;
(2)设
,用
表示
,并求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/210b3926a61f2dd9465eb906a32491ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d8da1c45a993e5549f3d18a0dd79713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f0e6d3115e900f1a359ec4f894e8896.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11b0c81b9b0e0cb0abd33fd84f325d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72850427e83ff19a24305783e080b280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72850427e83ff19a24305783e080b280.png)
您最近一年使用:0次
4 . 如图,在
中,
,
,点
在
的延长线上,点
是边
上的一点,且存在非零实数
,使
.
(Ⅰ)求
与
的数量积;
(Ⅱ)求
与
的数量积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d74864273da89d4c7771a244753ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5fc7f92372b1b3e47072dfc0a616a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b3a15ae9730962af0718c982541b85.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe35c91649a5bea2518387a2b36e0c0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b62ea9f2ffb1342d9edc22e9649cad.png)
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77b96bdf51785d5d15292d6a194881ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbba7bff7720b3aa33f29936ede7819e.png)
![](https://img.xkw.com/dksih/QBM/2018/2/7/1877211848851456/1879495060717568/STEM/decbacf5e4ce42f48dc7109503e168a4.png?resizew=245)
您最近一年使用:0次
5 . 在平面直角坐标系中,O为坐标原点,A,B,C三点满足
.
(1)求证:A,B,C三点共线;
(2)求
的值;
(3)已知
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6823f66e23b037fa84d0eefa84670b98.png)
的最小值为
,求实数
的值.
![](https://img.xkw.com/dksih/QBM/2016/6/2/1572689449050112/1572689455276032/STEM/98439d10e1b84296b83b5bcbdde0da45.png)
(1)求证:A,B,C三点共线;
(2)求
![](https://img.xkw.com/dksih/QBM/2016/6/2/1572689449050112/1572689455276032/STEM/d52510b21d5546aaa2ec5597279a170e.png)
(3)已知
![](https://img.xkw.com/dksih/QBM/2016/6/2/1572689449050112/1572689455276032/STEM/7280c15b87f84e5cabafb74a54a69759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6823f66e23b037fa84d0eefa84670b98.png)
的最小值为
![](https://img.xkw.com/dksih/QBM/2016/6/2/1572689449050112/1572689455276032/STEM/afe80ba5c6fa41daa7b11d84bacb3a06.png)
![](https://img.xkw.com/dksih/QBM/2016/6/2/1572689449050112/1572689455276032/STEM/41cfd1b40a094a0c8f8fa2778508ab92.png)
您最近一年使用:0次
名校
6 . 设向量
,
,其中
,
,
为实数.
(1)若
,求
的最小值;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/470955e0ba462ec27e4ecf289d0e26af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7b6222f2dff66ce212acaf92119af3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0acaaff6f066b088455b1c8610650fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602d32c271f3c70a3cff9ad6422c69b7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9412f10b1db89bd924ad7beadc83331b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/706e9acb62e73fac4c23fdbbd8a41a0d.png)
您最近一年使用:0次
2016-12-03更新
|
2169次组卷
|
5卷引用:江西省宜春市樟树中学2017-2018学年高一下学期第三次月考数学(理)试题
11-12高二上·江西·期末
7 . 动点
的轨迹
的方程为
,过焦点
的直线
与
相交于
,
两点,
为坐标原点.(1)求
的值;
(2)设
,当三角形
的面积
时,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/658aa70a197c830aa765f2f7ea4c86c5.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/832ca3f8e3f271f86141aa14969f2fc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ec213b81475f38a9bee5edb9669197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次