1 . 已知双曲线
的左、右焦点分别为
,直线
与
的一条渐近线平行,若点
在
的右支上,点
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b9a6f6acf5af46a6543c80414abbe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5640ba51541dce7590c009e5e77a1ff9.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd371fe0f40dc56b63c92d67c9ffcb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb1d666dafb5ec27128f2703e51afe5.png)
A.![]() | B.6 | C.![]() | D.8 |
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名校
解题方法
2 . 已知函数
满足下列条件:①
的定义域为
;②
是奇函数;③
的图象不是直线;④曲线
上的所有切线的斜率都大于1,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3c988d875438535244ee2b092a779b.png)
______ .(写出一个符合所有条件的
的解析式)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac87434324956e4145e38ad92a1aa95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3c988d875438535244ee2b092a779b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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3 . 已知直线
,圆
,则“
与
有公共点”是“![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5faa92475dd91f0c3c029d9d8e4d2a6.png)
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a8ba78658831f9fce13aafa1d93973.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/283e9300e810cd82d12f2b4cf57e7920.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/d5faa92475dd91f0c3c029d9d8e4d2a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f09396aeb5c3f1c5d2df27ea8d56bbf.png)
A.充分不必要条件 | B.必要不充分条件 | C.充要条件 | D.既不充分也不必要条件 |
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4 . 已知函数
,则下列结论中错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7444b2a67506a0b3bef129b6fc5a04f5.png)
A.![]() |
B.![]() |
C.![]() |
D.曲线![]() ![]() ![]() |
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解题方法
5 . 已知函数
,则不等式
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef88bf752cda4bb15e3205d4feccff89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9652e30dad4d1ea51c10b229a10252d.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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6 . 已知函数
,曲线
在点
处的切线与
轴平行或重合.
(1)求
的值;
(2)若对
恒成立,求
的取值范围;
(3)利用下表数据证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/410178c284d2027a2734a0b05aa0ac94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d0a4109aa195543d6ffe940e6577d1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)利用下表数据证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4314b1f4aee01d15d3fbc6857fac4f17.png)
![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
1.010 | 0.990 | 2.182 | 0.458 | 2.204 | 0.454 |
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7 . 已知函数
.
(1)当
时,求曲线
在
处的切线方程;
(2)若对
时,
,求正实数
的最大值;
(3)若函数
的最小值为
,试判断方程
实数根的个数,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb56efd846b2c43065cf4085d3ac0bc6.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3897bf276a0b6c2121917d39b369df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5944b9057143318843c2b3e455760fdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb23272635181bb51db5a6a1917d73aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca91c3c8d78332732f6b1c41d92cd867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c09d2ebdac2d558ff41633a1fdd6654.png)
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解题方法
8 . 已知椭圆
:
的左、右焦点分别为
,
为过点
的弦,
为
的中点,
,
,则
的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2db09da520510c30363efcdceeaab63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabea664e61863b3b3279dbce607924e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c99d3a303278e9acd12a880882eac2e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f18188355d0cf90c8d3f7b430e6b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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解题方法
9 . 设
是直线
与曲线
的两个交点的横坐标,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dae74c724114bfeff024dd7b79f5edc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46111e4d12c21798aa213c0d7804c2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55b8f1f4a005ada52c225801007495a9.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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