如图,一次函数
与反比例函数
的图象交于点A,B.点B的横坐标为
.直线AB交x轴于点C,交y轴于点D,过点A作
轴于点E,且
.
![](https://img.xkw.com/dksih/QBM/2022/4/28/2973739566030848/2977662429536256/STEM/d614dc13-61da-462e-8e27-5a5f72c34f69.png?resizew=173)
(1)求一次函数和反比例函数的表达式;
(2)根据函数图象直接写出不等式
的解集;
(3)若直线
与反比例函数、一次函数和y轴的交点中,有一个点是其他两个点的中点,求b的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5d501afbd7542f2f724b658edf39af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495a39daa0276db4728b7067a0299435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8178c63d125ee6235feeb2fc70d02745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/600b8c31633ce649b6a6bf7d8e0dae00.png)
![](https://img.xkw.com/dksih/QBM/2022/4/28/2973739566030848/2977662429536256/STEM/d614dc13-61da-462e-8e27-5a5f72c34f69.png?resizew=173)
(1)求一次函数和反比例函数的表达式;
(2)根据函数图象直接写出不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0f6bcc1f9654c72a2e82e155777504b.png)
(3)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30b566f3066454c6a04424218e40ed9.png)
更新时间:2022-05-12 09:32:37
|
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解答题-证明题
|
较难
(0.4)
【推荐1】如图,在四边形
中,
,
,
为
上一点,
,
,作
交
于点
,取
上一点
,以
,
为邻边向上作
,交
于点
,
.
(2)记
面积为
,四边形
面积为
,
①求
与
的关系式.
②连接
,若
为直角三角形时,求
的值.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/620fd368efb51a5ae90c0f3e276704d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a24ee04b7e461c045431ce83d15a91de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6623cae92a0632c7fbf47b83a5c2f188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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①求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2122e3f1e76a635e58e4d54aa594c552.png)
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解答题-证明题
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较难
(0.4)
【推荐2】如图
,四边形
中,
,
是边
的中点.已知
,
.
,求证
;
(2)如图
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时,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
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(2)如图
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(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75a1219bc313db46b07bbd68600267a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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解答题-问答题
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较难
(0.4)
【推荐1】阅读下列材料,回答问题.
关于x的方程
的解是
;
的解是
;
的解是
;
(即
)的解是
.
(1)请观察上述方程与其解的特征,x的方程
与上述方程有什么关系?猜想它的解是什么,并利用“方程的解”的概念进行验证.
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的和等于2,那么这个方程的解是x=a.请用这个结论解关于x的方程:
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关于x的方程
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(1)请观察上述方程与其解的特征,x的方程
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(2)由上述的观察、比较、猜想、验证,可得到以下结论:如果方程的左边是一个未知数倒数的a倍与这个未知数的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2c70fcaa661df4fbcad820b439accda.png)
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【推荐1】如图1,已知直线
与x轴、y轴交于点B、A,过A、B两点分别作y轴、x轴的垂线交于点F,点C为BF的中点,双曲线
,经过点C.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/2/9234bc05-69c3-4fc2-91cc-13fa59248e93.png?resizew=401)
(1)如图1,写出F点的坐标,并求出双曲线的解折式.
(2)如图1,过F点作直线,是否存在这样的直线,它与双曲线两个交点的距离为2;
(3)如图2,过F点作直线,交双曲线于D,E,分别过D、E作直线
的垂线,垂足分别为M,N,直线OF交直线M,N 于Q点,求证:直线DN平分线段QF.
(参考公式:①在平面直角坐标系中,已知点A
,B
,则A、B两点之间的距离为
;②如果实数x>0,y>0,那么
,当且仅当x=y时取等号)
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/2/9234bc05-69c3-4fc2-91cc-13fa59248e93.png?resizew=401)
(1)如图1,写出F点的坐标,并求出双曲线的解折式.
(2)如图1,过F点作直线,是否存在这样的直线,它与双曲线两个交点的距离为2;
(3)如图2,过F点作直线,交双曲线于D,E,分别过D、E作直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/026808536f6b6d265c778e23836fbf13.png)
(参考公式:①在平面直角坐标系中,已知点A
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f21d6c7558687b5b3027c01a6bcfc9.png)
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解答题-问答题
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较难
(0.4)
【推荐2】如图,一次函数
的图像与反比例函数
的图像交于点
,与y轴交于点
,与x轴交于点
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/23/b2024923-db33-4b13-bc6a-be36037beec1.png?resizew=395)
(1)求k与n的值;
(2)点
为x轴上的一点,当
的面积为16,求点
的坐标;
(3)在(2)问的条件下,且点
在x轴正半轴时.点
在y轴上,点M在反比例函数图像上,以
,
,
,
为顶点的四边形是平行四边形,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65920f4695a14c85e7085450aee08b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bde98b608331387ffbfaab1845cb662.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/23/b2024923-db33-4b13-bc6a-be36037beec1.png?resizew=395)
(1)求k与n的值;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
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(3)在(2)问的条件下,且点
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
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