1 . 如图,
切
于点
,直线
交于
于
,
两点,
,垂足为
.
![](https://img.xkw.com/dksih/QBM/2016/5/26/1572650019192832/1572650025377792/STEM/9bc98c96f8d34c5eaf16131eeb3a3cfe.png)
(1)证明:
;
(2)若
,求
的直径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2016/5/26/1572650019192832/1572650025377792/STEM/626c19b5758e4833aca70db926744144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/2016/5/26/1572650019192832/1572650025377792/STEM/c8f91b7c0bc54b35bcb659149e520ff3.png)
![](https://img.xkw.com/dksih/QBM/2016/5/26/1572650019192832/1572650025377792/STEM/626c19b5758e4833aca70db926744144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/2016/5/26/1572650019192832/1572650025377792/STEM/434fcd77e130486aa3b368aa9cbd1358.png)
![](https://img.xkw.com/dksih/QBM/2016/5/26/1572650019192832/1572650025377792/STEM/fc1054888f2f4029b8760ea2e4ab4abe.png)
![](https://img.xkw.com/dksih/QBM/2016/5/26/1572650019192832/1572650025377792/STEM/9bc98c96f8d34c5eaf16131eeb3a3cfe.png)
(1)证明:
![](https://img.xkw.com/dksih/QBM/2016/5/26/1572650019192832/1572650025377792/STEM/a3b697a0393b40989c8357d5d9815d6f.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2016/5/26/1572650019192832/1572650025377792/STEM/3014f6391c704895badc61dc87676a9d.png)
![](https://img.xkw.com/dksih/QBM/2016/5/26/1572650019192832/1572650025377792/STEM/626c19b5758e4833aca70db926744144.png)
您最近一年使用:0次
2 . 如图所示,在四棱锥
中,
为等边三角形,
,平面
平面
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2016/3/29/1572564572160000/1572564577878016/STEM/d701a4d53e8245e6a290731b88e69f32.png)
(1)证明:
;
(2)若
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6153163fecdf3f410411048428ccaef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aae7b9998141cd3bc6f7b653d8db69a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a357b55851323182da75969125aa7b96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda343129962dbadde66672a66bc4ee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/2016/3/29/1572564572160000/1572564577878016/STEM/d701a4d53e8245e6a290731b88e69f32.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8935df9d61741ecfc3df2f42a7d27fd1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e77c16357eabed95d85bbd4e3dada92e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
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3 . 如图所示,直线
与双曲线
及其渐近线依次交于
、
、
、
四点,记
.
![](https://img.xkw.com/dksih/QBM/2016/2/17/1572487760961536/1572487767015424/STEM/d6db5c1e7530464abd37ce7deb8c4c4b.png)
(Ⅰ)若直线
的方程为
,求
;
(Ⅱ)请根据(Ⅰ)的计算结果猜想
的关系,并证明之.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f6659cb32b270ba11718fb1e707b83.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec9f01a2cc677719a7bea57e0a60b043.png)
![](https://img.xkw.com/dksih/QBM/2016/2/17/1572487760961536/1572487767015424/STEM/d6db5c1e7530464abd37ce7deb8c4c4b.png)
(Ⅰ)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31c4f39399ec245a67db2933ed639f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01a5ae5f5e500fa18b7f1f67093cb952.png)
(Ⅱ)请根据(Ⅰ)的计算结果猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b710568224ed66434d82de3bdc4ffd4.png)
您最近一年使用:0次
2014·广东揭阳·一模
解题方法
4 . 已知曲线
的方程为:
,其中:
,且
为常数.
(1)判断曲线
的形状,并说明理由;
(2)设曲线
分别与
轴,
轴交于点
(
不同于坐标原点
),试判断
的面积S是否为定值?并证明你的判断;
(3)设直线
与曲线
交于不同的两点
,且
为坐标原点),求曲线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/767db2ba637b0c7cc0cdc33d50db5de0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)判断曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
(3)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ec899da04f19dca04bba10ffc4358a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a8e5978b718b8a1c936b65b82c5d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2016-12-02更新
|
3364次组卷
|
5卷引用:2016-2017学年重庆万州二中高二理上期中数学试卷
2016-2017学年重庆万州二中高二理上期中数学试卷2015-2016学年吉林省实验中学高一下学期期末数学试卷2016-2017学年四川省三台中学高二上小班周考数学试卷3(已下线)2014届广东省揭阳市高三3月第一次模拟考试文科数学试卷广西贺州市钟山中学2021-2022学年高二上学期9月月考数学试题
5 . 已知函数
.
(1)若
恒成立,试确定实数
的取值范围;
(2)证明:
.
![](https://img.xkw.com/dksih/QBM/2016/1/22/1572464369311744/1572464375463936/STEM/f099e94b2bbb46a592a079fa2315d0b4.png)
(1)若
![](https://img.xkw.com/dksih/QBM/2016/1/22/1572464369311744/1572464375463936/STEM/9726c6cb191a45c89277b498cd0d5616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)证明:
![](https://img.xkw.com/dksih/QBM/2016/1/22/1572464369311744/1572464375463936/STEM/4696b6fd0f3d4dde90c50af24ddc799b.png)
您最近一年使用:0次