1 . 已知点P是双曲线C:
(
,
)上一点,
,
分别是C的左、右焦点,设
,若
的重心和内心的连线垂直于x轴,则
的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faa4ae8d7537feb98c7de50302705609.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002ed1ebb2cb936e10ab478789f91c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
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解题方法
2 . 设函数
的定义域为R,
为奇函数,
为偶函数,当
时,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3d75d78903bd1fe1334b87a159deff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6c79e24a717a8cf46aa75d3437a9e49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51459b19f03662079f9b08d47375683c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0bbec4f3caec14801bac08683d0f331.png)
A.![]() | B.![]() ![]() |
C.![]() ![]() | D.方程![]() |
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解题方法
3 . 如图,四边形ABCD内接于圆O,圆O的半径
,
,
.
的大小以及线段AB的长;
(2)求四边形ABCD面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e159fa38488741d395ea9cb03386b1ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09ea9254c90d1a9ce85df41dbcbeb97e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e142544a6d4e6851096afbd3cbad2fe2.png)
(2)求四边形ABCD面积的取值范围.
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解题方法
4 . 已知随机变量
服从正态分布
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711c92626a97e6b778b3aa86e663ee97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d491a7726909c51fe40594c511a56220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f01b388d5b5fdc4d2c3e9fe5b66d9bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a87bac357650ddd36a23e550abafba5.png)
A.0.2 | B.0.3 | C.0.5 | D.0.6 |
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5 . 底面边长为
的正四棱锥被平行于其底面的平面所截,截去一个底面边长为
,高为3的正四棱锥,所得棱台的体积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
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解题方法
6 . 已知圆C:
,直线l:
,若l与圆C交于A,B两点,设坐标原点为O,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ca01d1c400707e011745ad16199da13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef6d00ddabcb1bb41fae534f5183ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df09bff72dab3e6555a0597b638a3bd0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
7 . 已知函数
.
(1)当
时,求
的极值;
(2)函数
在定义域上为增函数,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82ae2dff8fe64fb957b4622618a97e2.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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8 . 已知函数
在点
处的切线方程为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8262240fd443ffde3d0a0533144d342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a7a779e7150027ff56c6a2b3f8d2e37.png)
A.2 | B.1 | C.-2 | D.-5 |
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9 . 已知函数
.
(1)讨论函数
的单调性;
(2)当
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184a5ea8e818f3c09fdbff0a610b6118.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bec9aa46c5ab9f4be19cb6985bb4222.png)
您最近一年使用:0次
解题方法
10 . 已知函数
.
(1)当
时,请判断
的极值点的个数并说明理由;
(2)若
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ec761e879aa6a6a25ee87106270529.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79863748bbb4f280cdbfd58bb94b84dd.png)
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