1 . 已知等差数列满足
,则
的值为_____________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb9b096249f3e1fcb773898885d4af2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56c0482b7c6b14cddfde05e23b5747ce.png)
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2 . 在四棱柱
中,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce3cec96c4e1314eca67595920d726e.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4d13ecb54b1006051d2561327aa4755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d262480ffb55b7617f44b63f130c154a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c3d5f17df41d6abf9944b0d66552eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce3cec96c4e1314eca67595920d726e.png)
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3 . 命题“
”的否定是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/171a9c131149ab5fb1e3ddfdbbe794c6.png)
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4 . 已知偶函数
在
单调递减,
,若
,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe86cace140f2c3588ab115837bbfc9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09cc2d590d74ecaf47de3b501f355ff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5847e111ba30c93d5cf2c3accec043ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
5 . 已知函数
是定义在
上的周期为2的奇函数,当
时,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30dd53ea7d66a1e21d0dfdee678739d.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca542e78b7d77d008c9c4752afa91a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ee3fd70c37974be875f3d58301c1b68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30dd53ea7d66a1e21d0dfdee678739d.png)
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解题方法
6 . 已知函数
,区间
(
且
)满足:
在区间
上至少含有20个零点,在所有满足此条件的区间
中,
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba8ad89d842df9d862229efc35705265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4776c85b79df196f606d3ebf3697fbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91413c558d7a35bab90e33241c0d9885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4776c85b79df196f606d3ebf3697fbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4776c85b79df196f606d3ebf3697fbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
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名校
解题方法
7 . 以两条直线
的交点为圆心,并且与直线
相切的圆的方程是_____________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced2fbf08310eee95c31a0891b23b8ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274641ca2216d05465dada099ef933e0.png)
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名校
解题方法
8 . 在四棱柱
中,四边形
为平行四边形,若
,
,
均为单位向量,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/293e306e9ad08bd8f00562fd0d9975a7.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304a7f07db2ec637baadf8f0ab91c85c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d507cbc45fbda1630807543d4e038bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e6dadd08e418d154940177e9a474fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/293e306e9ad08bd8f00562fd0d9975a7.png)
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9 . 如图,在三棱锥
中,
平面BDC,
,则点B到平面ACD的距离等于_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e37f0ebd2a7fb0988a5ac6960699df2.png)
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解题方法
10 . 人教A版选择性必修一习题1.4拓广探索第17题中提到“在空间直角坐标系
中,己知向量
,点
,若平面
经过点
,且以
为法向量,点
是平面内的任意一点,则平面
的方程为
”.现己知平面
的方程为
,直线l是平面
与平面
的交线,且直线l的方向向量为
,则平面
的一个法向量可以为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6bf8326aa452fb85ae6bda3319b0d7.png)
_________ ,直线l与平面
所成角的正弦值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a834024400d0730af3e640ca4d5f54b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcca7d5f22aa5c008bd7f6a5be2e0e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c832b5312310a88bef6596496df8daa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e163480714acc9dae5005cac65d217d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bfcaf2a345411411cf94422703e9269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b523a8c1993478f6599680dc3b3dc45b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a7db7886506fd354edec11c89846e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23fc11a3a7592c68b20f93bdde2ed3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c001d43d68ea1cd6461c73ee48b1b4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42ec8f95b92938e32683695e22d63532.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6bf8326aa452fb85ae6bda3319b0d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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