1 . 设
不少于3的自然数
.在
上定义函数
如下:若
,
表示不是
的约数的最小自然数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d51f32ea7874d21b2d4a3e1cef311772.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb89f2fec63372a499d88704bb68fb94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ca8bdc812627d925f00ed7c145d696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e826426d7948a38e5273bfe8f3f0d2d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4fc8faefb26b233d4aa9dbef043aae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d51f32ea7874d21b2d4a3e1cef311772.png)
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2 . 设
.且满足
.则
的最小值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d31deb55384e737a96ca621e59b5e2b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93a7a16b570027bd39c6ac0c547e857f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d0e46a3e71d8c4665da8de3d0f463b.png)
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3 . 方程组
的解集是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e47eb60bff3882cb52780fe918c19e8.png)
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4 . 等差数列前n项之和为2000,公差为2,首项为整数,且n>1.则所有可能的n值之和为_______ .
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5 . 如图(a),已知正方体八个顶点分别赋值为
,
,
,
,
,
,
,
,然后,将与每个顶点相邻的正方体的三个顶点所赋值的算术平均值
,
,
,
,
,
,
,
放在另一个正方体的相应顶点处,如图(b).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/43b481e4-ac1e-462e-8552-5381db39297b.png?resizew=260)
若
,
,
,
,
,
,
,
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276509f01529d982ab21e479a4619268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/444967c743802e9da4571cf68c3aad6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b66779784b6e6377429c6efd1c0c1b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9489d4a6d1af0f194ae6b76aa2dddf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/104d13a3453c8730d00c3192df071895.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a81d40071c627bb2d5f4ca6242a0ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2be1199becdf7d29b3c69f6893eb11a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45a7e63081c9165bf8004baf863d8136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdadf5794e1c3709cc641309e1d20a53.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/43b481e4-ac1e-462e-8552-5381db39297b.png?resizew=260)
若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccb08424861b202a34be7983f741214a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/019eb94a6a2b38308811470d860e1a20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05a95aa173fcea62b59350555f7d097b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/346441065912bc61b277cf21198b5bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80bb6845d79938c65ce2d7b4a2b8c5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e5f1cfa28daec426fd042e5e5106a04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4825db18aaa741352361d54bab86b03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca41e8c40d8619786f761e2ecec5a56a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d0f1bff3c31c592d555f2300563de2.png)
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6 . 公元前240年左右,古希腊数学家埃拉托色尼住在亚历山大城(图1中的点A).据测量夏至正午太阳光偏离该地铅垂方向
;他又了解到,该城正南
处的塞尼城(图中的点
)夏至正午太阳正好悬在头顶.由此,他算出了地球经线的周长和半径.请你计算一下,地球经线的周长为______
,半径为______
(精确到
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9bcd43e48de7e44d069518caeca68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388a22e4b786723ad6c5235ec7193c1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce89b633e5d6bcf9406e3f9208fe06d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce89b633e5d6bcf9406e3f9208fe06d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e4917c34a4c4e654ace35eb65f179b.png)
![](https://img.xkw.com/dksih/QBM/2018/12/14/2096449475141632/2097425605984256/STEM/3ff0e8182b5e48509e3408e409436883.png?resizew=178)
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7 . 如果
、
、
是三角形的三边长,且满足
,则这个三角形的形状是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39cd417d54a0e0dee5bfb94bf1f5971f.png)
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2001高三·湖南·竞赛
8 . 已知
,且
均不为
.则化简
为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e56f4504e0f80fd031c8b5f41832e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f5573b30734d65648f61c0a94c98de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22c28c405746daf63f76ec8065084f85.png)
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9 . 关于m、n的方程
的整数解(m,n) = __________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede1bb7e316deab21a99c45f1e4add33.png)
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