如图,在平面直角坐标系中,抛物线
(
)与
轴交于点
、
,与
轴交于点
,且
,点
是第一象限内抛物线上的动点.
(1)求抛物线的解析式;
(2)连接
与
,交于点
,当
的值最大时,求点
的坐标;
(3)点
在抛物线上运动,点
在
轴上运动,是否存在点
、点
.使
,且
与
相似,若存在,请求出点
、点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db9b0cc1b7c5c56b72fa08dfd023e9f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)求抛物线的解析式;
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b75245cce3f6eb4ca71cb7cca0050d29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c447ca190f5168a07befbbfa8471ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12225a1a1eda07908309f8100cc34726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7ffcd1925a2b1259221c6a476152f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/2021/6/2/2734242590720000/2737840484638720/STEM/69b62a28-46db-4672-bb9e-fc11d1349828.png)
更新时间:2021-06-07 13:33:38
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【推荐1】阅读下列材料:
∵
,
,
,……
,
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b058330ea97d2b5cea1b40a6a9386e7.png)
=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0fac6e2e9ad741fe9aa003c6ced0e8c.png)
=
=
.
解答下列问题:
(1)在和式
中,第6项为______,第n项是__________.
(2)上述求和的想法是通过逆用________法则,将和式中的各分数转化为两个数之差,使得除首末两项外的中间各项可以_______,从而达到求和的目的.
(3)受此启发,请你解下面的方程:
.
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6db70c82a9e954787dcc215fed3b934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800d99a7eaa0917c1341bba0223e56a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8791e1a0e1263095f5f5a171db8c6e49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f2ac45f8a4745c7915824c08b405ba1.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b058330ea97d2b5cea1b40a6a9386e7.png)
=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0fac6e2e9ad741fe9aa003c6ced0e8c.png)
=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ddef8a1fab0c9a4c4a1d3413084fe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6ed70d3b4558cf2e4b0663f5c7a5a95.png)
解答下列问题:
(1)在和式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfcfd728fbbdb1fdd498f1dccdfebd73.png)
(2)上述求和的想法是通过逆用________法则,将和式中的各分数转化为两个数之差,使得除首末两项外的中间各项可以_______,从而达到求和的目的.
(3)受此启发,请你解下面的方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06f65000b8394e87a876619e83744749.png)
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【推荐1】抛物线
交
轴于点
,
(点
在点
左侧),交
轴于点
,已知
和
,点
为抛物线上第四象限的动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/7/876b5349-f0ba-42b9-b9ef-32da93ef9327.png?resizew=267)
(1)求抛物线的解析式;
(2)直线
交
于点
,求
的最大值;
(3)直线
交抛物线的对称轴于点
,过点
作
的平行线交抛物线的对称轴于点
,求当
最小时,动点
的横坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b7cd1d053af8da6b7cadfa34bf03d65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ba5cbb31299d683ac6c7dd795db85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/7/876b5349-f0ba-42b9-b9ef-32da93ef9327.png?resizew=267)
(1)求抛物线的解析式;
(2)直线
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf1edcd6fb7e526f5ea664f72d0cd42d.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/795247a4b19856ca1be2135c9309cbf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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【推荐2】如图,抛物线的图象经过点
,与x轴交于A、B两点(点A在点B的左边),与y轴交于点C,且
.
(1)求抛物线的函数表达式及C的坐标;
(2)在抛物线上是否存在点Q使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c499b1f470978c4f8cc05ffdebc2e961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c495b8fd7f7bb21c177c9d50fbf6919.png)
(3)如图,若K是x轴上一动点,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d29d7fac4f150927e672507bdb26285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0a759b7d6daaf89cabda7602f6edbeb.png)
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【推荐1】如图①,在平面直角坐标中,点
是第一象限内一点,过
点的直线分别与
轴,
轴的正半轴交于
两点,且
是
的中点,以
为直径的
交直线
于点
(位于点
右下方),交
轴于点
,连接
交
于点
.
若点
的坐标为
,请直接写出
两点的坐标和
的长.
若
,求
的度数;
如图②,在
的条件下,
是
上一点,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3918c1589de4626914bd0feb6cde25.png)
①求
的值;②求当
取最大值时
的半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](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/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c72c070f4f4d2b44927391b59a1e755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3423bacc9d30a58cc6421470e7760a56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826fa702e700b8536f77e44b134ce334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f62295c36d2e2174908c2bec0eb5b30f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd65e0e5e69c375884509de566a4f2bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3918c1589de4626914bd0feb6cde25.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bb2ec6b9ace9bc19b146f4a4bd5a58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c72c070f4f4d2b44927391b59a1e755.png)
![](https://img.xkw.com/dksih/QBM/2019/5/14/2203374079983616/2203456526270464/STEM/924ee67b65e74c74aedd891a42d46694.png?resizew=471)
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【推荐2】如图,在平面直角坐标系中,
的顶点A在
轴负半轴上,顶点
在
轴正半轴上,顶点
在第一象限,过点
作
轴于点
,线段
,
的长是一元二次方程
的两根,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/fec38161-dcf6-4735-b19b-b04a06d46c87.png?resizew=198)
(1)求点A,
的坐标;
(2)反比例函数
的图象经过点
,求
的值;
(3)在
轴上是否存在点
,使以
,
,
为顶点的三角形与以
,
,A为顶点的三角形相似?若存在,求出满足条件的点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9de7fcbcb1ef0134d70156bb19852ca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a49cbeae99b6fe64c101d2b46ef59c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81013b3a38488fce71582c3f4a5da43f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73152c2b4298298c8b81dc16dc21f5e7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/fec38161-dcf6-4735-b19b-b04a06d46c87.png?resizew=198)
(1)求点A,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)反比例函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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【推荐1】某数学兴趣小组在课外活动中,对多边形内两条互相垂直的线段做了如下探究:
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897122528903168/2897844439506944/STEM/0e652e6d-b78e-419c-a5a1-dc41a7bcbe1b.png?resizew=616)
(1)如图1,正方形
中,
,则
;
(2)如图2,长方形
中,
,
,则
;
(3)如图3,长方形
中,
,
,求
的值,并说明理由.
(4)知识应用:如图4,
中,
,将
沿
翻着后得到
,点
在
边上,点
在
边上,
,求
的值.
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897122528903168/2897844439506944/STEM/0e652e6d-b78e-419c-a5a1-dc41a7bcbe1b.png?resizew=616)
(1)如图1,正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f87b02b744534ae1ed700d21fcceb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fb8b625bbd261f00bb007516796c2bd.png)
(2)如图2,长方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509d8dd6031dc0ef92075877e53fe201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f1aa7e70fc7bc44773f6d8a40d3383.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fc5225dfcb420741b54f5601df29f2d.png)
(3)如图3,长方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b8982d1dd4b3024952e2d7f297650f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6be6e7be388c0ca18cf1a651ffddc48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bfedc3763140d4a3a25c837544847f1.png)
(4)知识应用:如图4,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c505c02c59313fe0108392a5bf5127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba8ec19677afdb300f4540e51cc5d88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c505c02c59313fe0108392a5bf5127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a3c199b4d4aa8e5cc411f8b928efef3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7cc087c22e1fc1197236c71e5465d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eaa7d20e48bde20c8ab18ffb341285e.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐2】如图,直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3396afb3d7e0b3595a79e63b04e43c60.png)
交
轴于点
,交
轴于点
,直线
交
轴于点
,交
轴于点
,交直线
于点
,过点
作
轴,垂足为
,且
.
![](https://img.xkw.com/dksih/QBM/2021/6/12/2741613873455104/2744419683491840/STEM/60b4e8f8-366a-40d3-b49a-751b6d3a657d.png)
(1)求
的值;
(2)
为线段
上一点,过点
作
的垂线,交
轴于点
,设点
的横坐标为
,线段
的长为
,求
与
的函数关系式;
![](https://img.xkw.com/dksih/QBM/2021/6/12/2741613873455104/2744419683491840/STEM/106a0451-da6e-40e6-bfb3-eb81e70fe927.png)
(3)在(2)的条件下,连接
交
于点
,且
,点
在线段
上,若
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3396afb3d7e0b3595a79e63b04e43c60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a6c9edc93f40b4acbe1a042c1df246b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c820c90a47b03ee1e229ee50dff48a3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a0642d945df967d5c6e60b845fb76d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c820c90a47b03ee1e229ee50dff48a3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f57f005a9592ea89ae2a2cee6598c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b4e2ad842cdc7d86da465631ca77ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62d67cb60f19af87f1a1e893f8cf0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee03c566c0e7ce78d451053997eea8b9.png)
![](https://img.xkw.com/dksih/QBM/2021/6/12/2741613873455104/2744419683491840/STEM/60b4e8f8-366a-40d3-b49a-751b6d3a657d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32dfc90d009f029db1401a71e5d3f859.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38b85bce5b3532a34cda2ee181ac373c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d45b3119e3afc81be5e3be1795905c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad4f07e5f69877c9fe07580a6bc7201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bbd4c060ed1608d8ce324eafadbca4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384cde358105707fea1f74cd5f5c3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bbd4c060ed1608d8ce324eafadbca4.png)
![](https://img.xkw.com/dksih/QBM/2021/6/12/2741613873455104/2744419683491840/STEM/106a0451-da6e-40e6-bfb3-eb81e70fe927.png)
(3)在(2)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ccbf1c82b1b330063016e3c5332d54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a60784afeeb5b701624b81ef023ad5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://img.xkw.com/dksih/QBM/2021/6/12/2741613873455104/2744419683491840/STEM/ae9f25b3-554a-4c30-89f6-009686fea27b.png)
您最近一年使用:0次