知:如图1,
是
的弦,点
是
的半径
的延长线上一点,将
翻折得到
,
交半径
于点
.
(1)求证:
.
(2)若
与
相切.
①如图2,点
落在
上,求
的值.
②如图3,若
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c430808cb91d66ce60b1e2f83f129db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c92b5799d12ea37de46d7c942ce7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/17/5db7bbcd-e9e3-4866-848c-23b67c210092.png?resizew=551)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4383792a07609bdd0bf17d2697426a59.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
①如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32e2f2d7147cf1699fbfdef9cf4af74.png)
②如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4ab0cbcf1eaecea7423b50fcf955a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b65065ec3a0cb4b050989165c003d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46cea1f4861584aba9b0d551961c8fc7.png)
更新时间:2023-09-27 09:28:47
|
相似题推荐
解答题-证明题
|
较难
(0.4)
名校
【推荐1】已知
是边长为6的等边三角形,D为
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/20/ecb772e0-39f2-44ee-a059-fa11b5f5b52a.png?resizew=268)
(1)如图1,连接
,E为线段
上的一个动点,以
为边长向下作等边三角形
,连接
,证明:
.
(2)在(1)的条件下,求
的最小值.
(3)如图2,G,H分别为
上的动点,连接
交于点I,
,连接
交
于点J,连接
并延长交
于点K,
,试探究
的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/20/ecb772e0-39f2-44ee-a059-fa11b5f5b52a.png?resizew=268)
(1)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c581dab991aeadf06d972e47673ea8.png)
(2)在(1)的条件下,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcabb18bdc9efab15545af9b536641a.png)
(3)如图2,G,H分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cca04b2a2b61d62a809776670a60c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec7d51800593ffdf8a614cdc6abe7c10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c510e6e8a521ada52e054787ad5f15b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3064b70f24e9bbcab76e0dc61274b9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2588559c01596b7d95c3431ce2d14d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fa5d8af7246c08d84cb03ef7173cd11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4ddd54d03cd20c893ee87018004a7f.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐2】综合与实践
【背景介绍】勾股定理是几何学中的明珠,充满着魅力.如图1是著名的赵爽弦图,由四个全等的直角三角形拼成,用它可以证明勾股定理,思路是大正方形的面积有两种求法,一种是等于
,另一种是等于四个直角三角形与一个小正方形的面积之和,即
,从而得到等式
,化简便得结论
.这里用两种求法来表示同一个量从而得到等式或方程的方法,我们称之为“双求法”.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/bb3cb15c-b647-4509-8925-16dca6a49187.png?resizew=536)
【方法运用】千百年来,人们对勾股定理的证明趋之若鹜,其中有著名的数学家,也有业余数学爱好者.向常春在2010年构造发现了一个新的证法:把两个全等的直角三角形
和
如图2放置,其三边长分别为
,
,
,
,显然
.
(1)请用
,
,
分别表示出四边形
,梯形
,
的面积,再探究这三个图形面积之间的关系,证明勾股定理
.
(2)【方法迁移】请利用“双求法”解决下面的问题:如图3,小正方形边长为1,连接小正方形的三个顶点,可得
,则
边上的高为______.
(3)如图4,在
中,
是
边上的高,
,
,
,设
,求
的值.
【背景介绍】勾股定理是几何学中的明珠,充满着魅力.如图1是著名的赵爽弦图,由四个全等的直角三角形拼成,用它可以证明勾股定理,思路是大正方形的面积有两种求法,一种是等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/566f7614d51f0348db982a9440de8844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8663297155433c29acc41d676a58378c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/680786a738e9cd7a229a6c854ed728c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3133ef62aad6bdd6637140620f068fad.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/bb3cb15c-b647-4509-8925-16dca6a49187.png?resizew=536)
【方法运用】千百年来,人们对勾股定理的证明趋之若鹜,其中有著名的数学家,也有业余数学爱好者.向常春在2010年构造发现了一个新的证法:把两个全等的直角三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db821f32a6d895b4428564fe08475260.png)
![](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/37c27d634c0f1025291763c9cadb6f5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d72a007e3c4a134956b0e3fbde5f46.png)
(1)请用
![](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/520f8abda6a85e7ef6f281fc2df853fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f56fe2c1064b804bb235fe72a4af288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b96715995549e5e48494101570bb3bb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3133ef62aad6bdd6637140620f068fad.png)
(2)【方法迁移】请利用“双求法”解决下面的问题:如图3,小正方形边长为1,连接小正方形的三个顶点,可得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)如图4,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c34eff4d793873d9e812d75d90fd10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐1】如图,
是
的直径,
是
的切线,以
,
为邻边作平行四边形
,边
交
于点
,连接
.
是
的切线;
(2)若
,
,求
的长度;
(3)在(2)的条件下,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8735e2de0ec29640d1eff9e043556030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f01262a53ac0247114fbb2e034f65c5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(3)在(2)的条件下,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a12b930089746d93307ac526b73170.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐2】如图,半圆O的直径
,在
中,
,
,
,半圆O以
的速度从左向右运动,在运动过程中,点D、E始终在直线BC上,设运动时间为
,当
时,半圆O在
的左侧,
.
如图1当
时,圆心O到AB所在直线的距离是______cm.
当t为何值时,
的边AB所在的直线与半圆O所在圆相切?求时间t.
如图2,线段AB的中点为F,求圆心O与B、F两点构成以BF为腰的等腰三角形时运动的时间t.
在图2的基础上,建立如图所示的平面直角坐标系,四边形ACBG是矩形,如图3,半圆O向右运动的同时矩形也向右运动,速度为
,问经过多长时间O、F、G在同一条直线上,求时间
并求出此时DG的直线解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8759308ad22c3c55da1f08285806fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882589c896c6993d9687f0e14a283481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13d71a5e5e491a8c54fccc405b35ed06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba196286c8296487cb226813f37949ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18b4aeff692cbd1ef60e6d562dd6496d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f051275aa34c90fd6957973f6640753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99d12c2cda2461b98d9e416249dea788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/269a05880d03b9af01aaf2579f36e6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882589c896c6993d9687f0e14a283481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b38f7849681e9ba6d897ea9df0cc9cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f9a1f6a5a629535f9e2852fcb066cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882589c896c6993d9687f0e14a283481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb89a362c1faf4d0c306eabbb59710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e636bddc1a3d7c006ac304e96cd2551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a66f7668d38373b8e824b6fd988b4333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed9a5a2656fb7aa862541cc52575aa9e.png)
![](https://img.xkw.com/dksih/QBM/2019/4/7/2177284776714240/2178878104322048/STEM/67b43f4246af4850a6c4842db35e5c22.png?resizew=422)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
名校
【推荐1】在Rt△ABC中,∠ABC=90°,∠ACB=30°,AB=2,点O是边AC的中点,连接OB.点P是边BC上的动点(不与点B、点C重合).连接OP,将线段OP绕点O逆时针旋转120°,得到线段OE,连接PE,CE.
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844508550397952/2846965350137856/STEM/d85a4e6b-7c59-4cda-95b3-162b830b78c0.png)
(1)如图1,
①求∠BOC的度数;
②求证:
;
③若∠BOP=15°,直接写出下列线段长: PC= ; PE= .
(2)如图2,延长EO至点G,使得OE=OG,连接AG,
①当点G恰好落在边BC上时,直接写出
的值;
②当A,P,G三点共线时,连接AE,以AE为斜边向上作等腰直角三角形AEF,直接写出此时点P与点F之间的距离.
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844508550397952/2846965350137856/STEM/d85a4e6b-7c59-4cda-95b3-162b830b78c0.png)
(1)如图1,
①求∠BOC的度数;
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7bf245e5b3d097c067ae09f2793f275.png)
③若∠BOP=15°,直接写出下列线段长: PC= ; PE= .
(2)如图2,延长EO至点G,使得OE=OG,连接AG,
①当点G恰好落在边BC上时,直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3eb77ea6d03f69cc4121d1c13dfa54b.png)
②当A,P,G三点共线时,连接AE,以AE为斜边向上作等腰直角三角形AEF,直接写出此时点P与点F之间的距离.
您最近一年使用:0次
解答题-作图题
|
较难
(0.4)
【推荐2】三角形中,顶角等于
的等腰三角形称为黄金三角形,如图
,在
中,已知:
,且
.
在图
中,用尺规作
的垂直平分线交
于
,并连接
(保留作图痕迹,不写作法);
是不是黄金三角形?如果是,请给出证明;如果不是,请说明理由;
设
,试求
的值;
如图
,在
中,已知
,
,且
,请直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb6b14146fe92c0d8216e32926ad4371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab41054fa9ce51b68e78d9c0cf398d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efb583c572416fe49d3c1edd942c5935.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2e48e6bc249b42e93f95942f0010bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb89a362c1faf4d0c306eabbb59710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edab644589dc0fe5c3a2cc82eb02a570.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e636bddc1a3d7c006ac304e96cd2551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bcc65bfd96beeb5f6a788d47ccdcf16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22eef9024d38890054a86bb263c977a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bac68560cd9ad1fbea21f8b3094678e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b160268cff2637676f4edfdb1448dc35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78885f2dd013619a808bc95e85beb5c.png)
![](https://img.xkw.com/dksih/QBM/2018/9/13/2031273804095488/2031637500993536/STEM/8d01b8275eae436794411397d894a7d1.png?resizew=230)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐1】如图,OA是⊙O的半径,点E为圆内一点,且OA⊥OE,AB是⊙O的切线,EB交⊙O于点F,BQ⊥AF于点Q.
(1)如图1,求证:OE∥AB;
(2)如图2,若AB=AO,求
的值;
(3)如图3,连接OF,∠EOF的平分线交射线AF于点P,若OA=2,cos∠PAB=
,求OP的长.
(1)如图1,求证:OE∥AB;
(2)如图2,若AB=AO,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455f4d5c369a110e682cec677ad1ab38.png)
(3)如图3,连接OF,∠EOF的平分线交射线AF于点P,若OA=2,cos∠PAB=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://img.xkw.com/dksih/QBM/2019/5/31/2215358676934656/2217771604500480/STEM/d1eac46383914aa8836b67c5770d473a.png?resizew=458)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】如图,四边形
是矩形,
,
,连接
.点G从点D出发,以每秒2个单位长度的速度沿着边
向终点C匀速运动,线段
绕点D逆时针方向旋转
得到线段
,以线段
为边作菱形
.设菱形
与
重叠部分图形的面积为y(
),点G运动的时间为x秒.
______
.
(2)当点F落在
上时,
______秒.
(3)求y关于x的函数解析式,并写出自变量x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffc2817fa590affb5a760a25dc65308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb6808a9b970e59bad464b793c824d46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/386cda9f96731510d52ec18199e18286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)当点F落在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
(3)求y关于x的函数解析式,并写出自变量x的取值范围.
您最近一年使用:0次