1 .
的个位数为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e60213c61e17d03511de11bc9afd5680.png)
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名校
2 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39168c0b809fe1120df247aeb1c55a44.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408c639795222936f9c30b11117a9756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39168c0b809fe1120df247aeb1c55a44.png)
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2018-12-06更新
|
132次组卷
|
3卷引用:江西省萍乡市2016-2017学年高一竞赛试题数学试题
3 . 如图,
、
、
为
的内角平分线,且
.证明:
(1)
;
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8b32482d320cd2a1e248b23d79a6227.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a64acbac1844f47eaef48a8b0bfc75d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49ee9013c6a653894bdba1d271284034.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1be17e0a3e51cde1f50f384198e71e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8b32482d320cd2a1e248b23d79a6227.png)
![](https://img.xkw.com/dksih/QBM/2018/12/4/2089518449434624/2090822998458368/STEM/e6c308cf05b245c98d8690f10b638536.png?resizew=339)
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4 . 集合
、
为
的一个等浓二分划(即
,
,且
.记集合
中所有数的积为
,集合
中所有数的积为
,称
为
的等浓二分划的特征数.证明:
(1)集合
的等浓二分划的特征数一定为合数;
(2)若等浓二分划的特征数不为2的倍数,则该特征数为
的倍数.
注:有限集合
的元素个数简记为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e375894300650a0aabf113ee94ad048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07d037e9d6288bf61a1fceed25a419df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71e896f2fa4f85dc29f7e71d7e0f6d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/952a56c457caee8c2a1c7fec94641eca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316d25dfa1b73fc02e1b8cfaf3adfcb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(1)集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(2)若等浓二分划的特征数不为2的倍数,则该特征数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f8fde3a2003ef44fdc891265c68cea.png)
注:有限集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e565dc1dd0d9cc3e4186cd614814b7f6.png)
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5 . 设
为定义在
上的函数,且满足
.对任意的
,均有
.①
(1)证明
为周期函数,并确定
;
(2)计算
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fcec7af3520884b173b29bda6c657a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2077e5032491293f8181c4fc3bcf360a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e1df7904ebe4f6f77a38c1e7834a16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a29e2530309d5619cbb4ca046bea029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/527aa842d9636f25f89b17e335878185.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fcec7af3520884b173b29bda6c657a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fcec7af3520884b173b29bda6c657a.png)
(2)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930195c01b1dea98d62732e672714957.png)
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6 . 满足系数
、
为整数,且根为无理数
、
的二次三项式
称为无理二次三项式.求所有无理二次三项式中根的绝对值之和的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943b765718479c160ba61ec5c6f8c5f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e29bf5652f0d4f764c3606efcdb445f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3c114f3cc1fd54e5fa3e32fc8a15389.png)
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7 . 由
上的点
引三条弦
、
、
,使得
.证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92842b5f44c68bc2375fd6447be357b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb7179ad11628f9343d5868399b594f9.png)
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8 . 实数
、
、
使得:
和
.则
的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d95e773f9ee66c1eb6365f325f68b2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f16c1d1114654234843b71e4a1be63b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ebc856291255f2d4a6c20b982a2442.png)
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9 . 已知
、
均为等腰三角形,
,
.如图,将
绕点
逆时针方向旋转一个角度
,
的延长线与直线
交于点
,如图.
![](https://img.xkw.com/dksih/QBM/2018/12/4/2089518449434624/2090822997901312/STEM/af61e656989344b9b2a75721b68bbc34.png?resizew=158)
![](https://img.xkw.com/dksih/QBM/2018/12/4/2089518449434624/2090822997901312/STEM/689f05d11d6a4871818b0b75837a55ae.png?resizew=180)
则
绕点
逆时针方向从
旋转到
的过程中,点
运动的路线长为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f460edcced5597615113c0fdc95b1dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abc28e69c1ba0aac981256887f7dfa94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f460edcced5597615113c0fdc95b1dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2018/12/4/2089518449434624/2090822997901312/STEM/af61e656989344b9b2a75721b68bbc34.png?resizew=158)
![](https://img.xkw.com/dksih/QBM/2018/12/4/2089518449434624/2090822997901312/STEM/689f05d11d6a4871818b0b75837a55ae.png?resizew=180)
则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f460edcced5597615113c0fdc95b1dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235d495d88b8e51f89e2e4da27328025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe639eab78eafd2d40ea70aa5d3f21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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