名校
1 . 设关于
的方程
的两根为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
(1)若
,求
的值;
(2)若方程至少有一根的模为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2914555b73c954e85aa05449d767eee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a39b9354d936ff25d65386d56671d56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若方程至少有一根的模为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2024高一下·全国·专题练习
2 . 如图,
不共面,且
且相等,
且相等,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0247b63d3f3cc573a24ba0036899c96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e725362f254f8f39245bd3ed311d6d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe2bb400160da0da6df6abbaa5fa0f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5c70782c77be805de33099687afc07.png)
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名校
3 . 设
,
为方程
的两个根,且
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6962df3ea2decdbca9a1c57cb99ebbf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fcf4f378df128fed4c474bf7b546e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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4 . 设
是方程
的一组解,计算:
(1)
;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad0086651e05c716cec1ba31cf09f1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821dc5767ac7967687426e4b9c46c918.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b859b72b8127df011d0b3032d2c3ff3e.png)
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名校
5 . 若方程
两根为c,d,则方程
的根是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a136c7f8d142e05841b1ec364d4500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc8af10cfb8fa47ea0fb6564852f02c.png)
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
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名校
6 . 某学校附近有条长500米,宽6米的道路(如图1所示的矩形ABCD),路的一侧划有100个长5米,宽2.5米的停车位(如矩形AEFG),由于停车位不足,放学时段道路拥堵,学校安保处李老师提出一个改造方案,在不改变停车位形状大小、不改变汽车通道宽度的条件下,可通过压缩道路旁边绿化带及改变停车位方向来增加停车位,记绿化带被压缩的宽度
(米),停车位相对道路倾斜的角度度
,其中
.
,求
和
的长;
(2)求d关于
的函数表达式
;
(3)若
,按照李老师的方案,该路段改造后的停车位比改造前增加多少个?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/990a3680645f22737907fc1b5b10d99a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eb60187001a6a7bbf887d2a233e5e26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09463dc187d5b2574170f1566ac4c382.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9088e31e00eaa4e95c1e6717b0c82cdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827be85b8f921007a5cf9edb64bd3491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c495fd86e62c3090caba0702bbcffd7.png)
(2)求d关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f74946c4e57365e0de85d277ba8d2a.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f2572192cc7ca046e9a3155ef3e56a.png)
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名校
7 . 在平面直角坐标系中,直线l与抛物线
交于
、
两点,点
在抛物线上,
是
轴上一动点.
(1)求直线l和抛物线
的解析式;
(2)如图1,
为抛物线
上位于直线l下方一动点,过
作
垂直于x轴交直线l于
,当线段
长度最大时,求
的最大值;
(3)如图2,
为抛物线
的顶点,y轴上是否存在点M,使得
?若存在,求出点M的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e2f3a811787b14bcabdb6a4cd49da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0898eaf39239999c25447d0512c95f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585739fbbb741c51cdecdb39c30c0ebc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e20ba7e4b42a007bf8c2846bcab995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/874cbdb3-fff4-4ddc-be75-e24328eb7b84.png?resizew=299)
(1)求直线l和抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(2)如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d82bbfaf8a2aa02ec01210b8b6fa8d13.png)
(3)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb02779236aff6a174a29dff0b2524f0.png)
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名校
8 . 如图,
中,
,
,
,
分别为
边上三点,
在边
上,且
和
均为等边三角形.则
边
上的高为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6684304a7537da9517c889c9cbf90a48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5d0162d0ee5286bf0f1996d7180382.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb26f0163aa641213e18090181ae913e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9763846b1131e1e3e2d741ad95d5bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/74cb4fcb-e1d4-4d28-a41b-1c497a2f39d4.png?resizew=156)
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名校
9 . 平面四边形
中,
,
,
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/853e81b1b9606ad25244ff82c8292df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d3c9ce32b721995f355eea411340e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
10 . 如图,边长为3的正方形,
分别是
上两点,且
,连接
交于点
,若图中阴影部分面积是正方形面积的
,则
的周长为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b96dce1ec94eb90c243b2eddb78476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7e4ac63cde95545106ac7f59cb076ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f8eebda19eded2b059774a8c2666c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94f6bddfec98926ac5e34c1187700b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822b3850f7df506efc1a592d57ec3a5d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/08729178-5c4c-4391-886d-12d4528777ef.png?resizew=161)
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