1 . (1)若正整数n可以表示成
)的形式,则称n为“好数”.试求与2的正整数次幂相邻的所有好数.(2) 试求不定方程
的所有非负整数解
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a123e4055c207baef618f3ffd0e35a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ab0eb1a495357b362780599c7efe80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f170557ffb23bd43c7424e0c239f53.png)
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2 . 30 !末尾最后一个不为零的数字为________ .
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3 . 设二元函数
的定义域是
.
(1)求
(点
)的取值范围;
(2)求所有的实数
,使得在空间直角坐标系
中,曲面
(点
)与另一个曲面
相交.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf817f46e37a9fe4c233a19afe6a1372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ca11c988deeb173ffc1cbda75bf210.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e664fa90a859ab05fe49972a474a5fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5686c7159deb00ae0223080be8be438.png)
(2)求所有的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e664fa90a859ab05fe49972a474a5fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5686c7159deb00ae0223080be8be438.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f78068b83274ce732774cb4a92d4122.png)
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4 . 设实常数k使得方程
在平面直角坐标系
中表示两条相交的直线,交点为P.若点A、B分别在这两条直线上,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc86613c8ad7fb3c3984870bf33cfe43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf61ef411f5ed89b41fe576e5e0125f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2beb91f10d2d8f2aa0dcc3f5cd1598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/767135245348abf9471b38c907e67e45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc86613c8ad7fb3c3984870bf33cfe43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
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5 . 在正方体的8个顶点、12条棱的中点、6个侧面的中心点、1个体的中心点,这27个点中,共球面的8点组的个数是.
A.4462 | B.4584 | C.4590 | D.4602 |
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6 . 把函数
的系数按其自然位置排成两行两列,记为二阶矩阵
.其中,每一个数字称为二阶矩阵的元素.又记![](https://staticzujuan.xkw.com/quesimg/Upload/formula/199cb5466890d3ce699148146663f513.png)
的系数所组成的二阶矩阵
为A的平方,即
.观察二阶矩阵乘法的规律,写出
中的元素![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf99615e41020525098939707a40f5f.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbb5f0f61fae6f5ca170489b5b0dc3de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9cf337656a39e00ac15baac5859d2ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/199cb5466890d3ce699148146663f513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a06a5d58ce58be2357fc5e58f708300.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d65a40a6a23af7f089dfe8285f0fb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01ec5d9eda885dc2be90d86573388f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1467104dac29364b591fb937acb9b8c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf99615e41020525098939707a40f5f.png)
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7 . 平面区域
的面积等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db62f3057468ac225f749a4c8904c98e.png)
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8 . 设
、
、
、
是以
为球心的球面上四点,
、
、
两两互相垂直,且
厘米,
厘米,
厘米.则球的半径
为( )厘米.
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f93ab028bcbeeef81aaf9d8b940d2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
A.3 | B.4 | C.5 | D.6 |
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9 . 在直角坐标系中,有三只青蛙A、B、C,其起始位置分别为
,首先,A以B为中心跳到其对称点上,然后,B以C为中心跳到其对称点上,接着,C以A为中心跳到其对称点上,……依此类推.设A、B、C第n次跳到的位置分别为
,
的三边长分别为a、b、c,面积为S.证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5573347ce8e07b572c32bfdb5cfbd79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd5c408af5a06bae6886cd84beba3798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71d4b64f0ec21ced63dfa919f464b20f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25585705f7939b0b5686d23e32c9f505.png)
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10 . 设直线与函数
的图像恰有两个不同的公共点.求出所有这样的直线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e7ec9f1afdeaf74024bc6009ee39ed9.png)
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