1 . 已知
,
是双曲线
上关于原点对称的两点,点
是该双曲线上的任意一点.若直线
,
的斜率都存在,则
的值为定值.试类比上述双曲线的性质,得到椭圆
的一个类似性质为:设
,
是椭圆
上关于原点对称的两点,点
是椭圆上的任意一点.若直线
,
的斜率都存在,则
的值为定值,该定值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ea74737939c0f94c91229a7098f36ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5702feefd657c2987d3fe5d9884f2d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5702feefd657c2987d3fe5d9884f2d0.png)
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2 . 对于自然数方幂和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af55ba3abae15944eabc13e775008b3c.png)
,
,
,求和方法如下:
,
,
…
,
将上面各式左右两边分别相加,就会有
,解得
,类比以上过程可以求得
,
且与
无关,则
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af55ba3abae15944eabc13e775008b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/530e195c6d4bc7767f2d9b93d6870469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/327fc051696534ffc1dc2f36d7678bc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3864438300f63b6ad307d3472855b20e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed924f59f847c4d70585d157995ed27f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bae1feea42d8842952b1e263239b3971.png)
…
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/840f1c513febbd05db50ef86168b7f3f.png)
将上面各式左右两边分别相加,就会有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0423bd93e59bbe7d9853ad9c799de7a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5546dc629174fdac4cbb986a17f8294f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e526bc24839834c391d9f02a08cbbcd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55509f42a5a441e99ce5f6588c70796e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950867b34375c0c24128a4050c9d2e5a.png)
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3 . 已知
,
,
,
,若
(
),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/912fb9e87d1ba443de3706d6d6520c28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cfe3ac71eb9e6e20846fa092da7ba68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f854c72c35f65fc424e52fc4646cc71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8737c29b2e5a76a620b41b4588fa171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6d8e87ca6ba04d20ede3136fad5e53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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2018-01-19更新
|
508次组卷
|
3卷引用:江苏省泰州市2017~2018学年度高二第一学期期末考试数学(理科)试题
名校
4 . 椭圆
在其上一点
处的切线方程为
.类比上述结论,双曲线
在其上一点
处的切线方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf0d139c9810361b4971904a943856b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9656735f55e5de465e5667ba578d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf0d139c9810361b4971904a943856b.png)
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2018-01-19更新
|
876次组卷
|
7卷引用:江苏省泰州市2017~2018学年度高二第一学期期末考试数学(理科)试题
5 . 已知
,
.
(1)求
的值;
(2)试猜想
的表达式(用一个组合数表示),并证明你的猜想.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ff73d6ea82e5a173f6a41108282e8a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10aa6134eeec0fc1d2b8f140fb894060.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91c6ad898dcf2d229d8c8b264a263188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9347bb4ffedcbea2f4c16d047a138d75.png)
(2)试猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fcec7af3520884b173b29bda6c657a.png)
您最近一年使用:0次
2018-01-18更新
|
920次组卷
|
5卷引用:南京市、盐城市2018届高三年级第一次模拟考试数学(理)试题
南京市、盐城市2018届高三年级第一次模拟考试数学(理)试题(已下线)2018年高考二轮复习测试专项【苏教版】专题九 算法 推理与证明 复数江苏省连云港市锦屏高级中学2017-2018学年高二下学期期中数学(理)试题2020届江苏省南通市西亭高级中学高三上学期第一次校内模拟测试数学(理)试题(已下线)二轮复习测试专项 【新课标版理科数学】专题七 排列组合二项式定理
名校
6 . 观察下列各式:(1)
,(2)
,(3)
,……,根据以上事
实,由归纳推理可得:若定义在
上的偶函数
的导函数为
,则
=____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39facae7f1382f982371ca8e14789f01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9ec545c157186997a499e740cc5ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6332a7b9a1995b4b0ae1bd582b9bcb3f.png)
实,由归纳推理可得:若定义在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6181ea7339144345677568a7fd485f84.png)
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7 . 已知
为三条不同的直线,给出如下两个命题:①若
,则
;②若
,则
.试类比以上某个命题,写出一个正确的命题:设
为三个不同的平面,__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2d8bf87219733e47b7165702aa098c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347347d0147894ec926890e1eef45de0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6c29ab9016c0ec2f1bf154d5f0595c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2293799d379200cf746e8450ebd5744f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61ba63ad02b1d5af2982fac3d91eb15c.png)
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名校
8 . 圆
上点P(
,
)处的切线方程为
.类比此结论,椭圆
(
>
>0)上点P(
,
)处的切线方程为________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3503d330608e7138d1b529aba4512fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d340bd3f078b9261238d4fe59f1473c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.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/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
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2017-05-25更新
|
476次组卷
|
4卷引用:江苏省沭阳县2016-2017学年高二下学期期中调研测试数学试题
9 . 在
中,
,则
的外接圆半径
;类比到空间,若三棱锥
的三条侧棱
两两互相垂直,且长度分别为
,则三棱锥
的外接球的半径![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3ef4881bd7c5860178dbdbc7bba6e3.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6698f376ff54404ea2bcf0eae6e3a2a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/817d63b092387c04b941f113a014a70d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8759e236bed05ad831f89f66070a477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3ef4881bd7c5860178dbdbc7bba6e3.png)
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2016-12-04更新
|
705次组卷
|
2卷引用:2015-2016学年江苏泰兴中学高二上学期期末数学(理)试卷
9-10高二下·江苏南通·期末
名校
10 . 请阅读下列材料:若两个正实数
满足
,那么
.证明:构造函数
,因为对一切实数
,恒有
,所以
,从而得
,所以
.根据上述证明方法,若
个正实数满足
时,你能得到的结论为_______ .(不必证明)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0158862238e250d2a2598b7d4ecd148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/469cd7bde8b86abc995debc8f43d504f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee0e066a31a9c9c18b8c7e0592eee0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45913ffe796167ee33fe1b19a9228b6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2e65b8353bf846fafb6baba9a9fa21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d53b761aa4be0bb01c5db6552f3a9dcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee0e066a31a9c9c18b8c7e0592eee0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2e29ce68d400ad5228a1c36a4926620.png)
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2016-12-04更新
|
290次组卷
|
5卷引用:江苏省启东市09-10学年高二下学期期末学生素质考试数学试题(文)
(已下线)江苏省启东市09-10学年高二下学期期末学生素质考试数学试题(文)(已下线)2011届江西省新余四中高三第二次联考数学理卷(已下线)2012届河南省焦作市高三第一次质量检测文科数学试卷2015-2016学年广东惠州一中高二下期中文科数学试卷安徽师范大学附属中学2020-2021学年高二下学期期中文科数学试题