1 . 如图,在直角
中,
分别为边
上的一点,
,设
.
时,求
的长;
(2)当
时,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c578a8282d443e6ac78f6724b37cc32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6022c708eae22d66c3a75b22f78f2206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/226eb5bc243dc12d2b334401b37fb51e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1c3ea872a20fdc1843cb5ffce8a554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65844ad7d410463e70288b6d20a5f4c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5447a70b9197de4d2814c227a33b42fc.png)
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名校
解题方法
2 . 已知定义域为
的奇函数
满足
,且
在
上单调递减,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c17fde635ef87d0e5ef3206f7e8f5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb87c830a03204a5b783ad4c2ba49c4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d12f3cf751822522ba5f88077c1a2e1.png)
A.函数![]() ![]() |
B.![]() |
C.![]() |
D.设![]() ![]() ![]() ![]() |
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3 . 椭圆
,
,
,
为椭圆
过点E的一条弦,且
,直线
的斜率与
的斜率乘积为
,则椭圆
的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca012232a3caa98be08d1144ac5257f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f565ad2d7a815abc58fd60ad6d3fcef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28926c57f89aec3fa6de064bfbaa1e3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633251fcedb49b3f9439bd240587991b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3171b3d11c6f4619e189677345357508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af6ddf31b7d9225a4239883af72d153b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
4 . 抛物线
上有
三点,且直线
的斜率大于零,
,点
为三角形
的重心,若直线
横截距的范围为
,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ccbf79da6ad7e3709d6fa72efb756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b23505e51b6420028b524bf8e5166c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1742e45737333ebbd8b42d8cafffc5b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 在平面直角坐标系中,圆
:
与
关于直线
对称,直线
:
过坐标原点
,当直线
与
,
各有两个交点时,直线
将
,
截成四段圆弧,若其中存在两端圆弧长度相等,则
的所有可能值的乘积为___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7acd2faeb5513785c3169d6b29dd1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ad06e190aa36400e0628056cb0c73f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac02a054bd0771a56987af33454baaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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6 . 已知双曲线
,点
,经过点M的直线交双曲线C于不同的两点A、B,过点A,B分别作双曲线C的切线,两切线交于点E.(二次曲线
在曲线上某点
处的切线方程为
)
(1)求证:点E恒在一条定直线L上;
(2)若两直线与L交于点N,
,求
的值;
(3)若点A、B都在双曲线C的右支上,过点A、B分别做直线L的垂线,垂足分别为P、Q,记
,
,
的面积分别为
,问:是否存在常数m,使得
?若存在,求出m的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0017262e45089093f70001cae2c60257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/363598fd39f2269952dc6ddd1201346c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f16f528223f178103c2d8193b45e07af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b4f86e48e2b0d63c1865c60ed1e4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7444e40f6ef2b62a680fb325a266cb63.png)
(1)求证:点E恒在一条定直线L上;
(2)若两直线与L交于点N,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9619a20d8dfa7aeaefd5fc1b76b5a40c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
(3)若点A、B都在双曲线C的右支上,过点A、B分别做直线L的垂线,垂足分别为P、Q,记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2b58424e893df4e01c912f87e09095.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf173f2377cc32d2a33d889729a224e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca1f167ece5d18225840af97b39af9e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf4e20ea341827ce5f9552daee39462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a22e8a68eb538caf433c0a280f6623.png)
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2024-02-05更新
|
1212次组卷
|
2卷引用:辽宁省大连市2023-2024学年高二上学期期末数学试题
名校
解题方法
7 . 已知椭圆
上有不同两点
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b747db7eaf469c6d1607e4b0d028299f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14436636ec6a7aec09cb63cecf6e970d.png)
A.若![]() ![]() ![]() |
B.![]() ![]() ![]() |
C.若![]() ![]() |
D.![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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2024-02-04更新
|
1164次组卷
|
3卷引用:辽宁省五校联考2023-2024学年高二上学期1月期末数学试题
名校
解题方法
8 . 已知三棱锥
顶点均在一个半径为5的球面上,
,P到底面ABC的距离为5,则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/368cef533ad564c69f174e3ca7b47ee5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b61f524340eed296cd9e85043f0ed3dc.png)
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2024-02-04更新
|
741次组卷
|
2卷引用:辽宁省大连市2023-2024学年高二上学期期末数学试题
名校
解题方法
9 . 已知函数
,设函数
,则函数
有6个零点的充要条件是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66229c78b5ea53fb93a27a3ac2086bf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bc03310fc91e68b9529fce0ad511be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-02-03更新
|
517次组卷
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2卷引用:辽宁省大连市2023-2024学年高一上学期期末考试数学试卷
10 . 已知椭圆
的左右焦点分别
,若______.
请把以下两个条件中任选一个补充在横线上作答(若都选择,则按照第一个解答给分)
①四点
中,恰有三点在椭圆C上.
②椭圆C经过
,
轴,且
.
(1)求椭圆C的方程;
(2)设点D为椭圆C的上顶点,过点D作两条互相垂直的直线分别交椭圆于A、B两点,过D作直线AB的垂线垂足为M,判断y轴上是否存在定点N,使得
为定值?请证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
请把以下两个条件中任选一个补充在横线上作答(若都选择,则按照第一个解答给分)
①四点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aedfac2568f82d62e1afd663ca6efcd7.png)
②椭圆C经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827d2dba1eefc6237b6808e058d45f92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c47fb32b931ef1125d7a241d1c829e98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f27b6070d21b6a3fb46e522b8b8bb2.png)
(1)求椭圆C的方程;
(2)设点D为椭圆C的上顶点,过点D作两条互相垂直的直线分别交椭圆于A、B两点,过D作直线AB的垂线垂足为M,判断y轴上是否存在定点N,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4ea7acf140086ae816a4025d2683dc.png)
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