如图,已知矩形
,点
为线段
上一动点,沿线段
由
向
运动,连接
,以
为边向右侧作正方形
,连接
,设
的路程即
的长为
,
间的距离为
,
间的距离为
.
数学兴趣小组的小刚根据学习函数的经验,分别对函数
随自变量
的变化而变化的规律进行探究,过程如下:
(1)根据下表中自变量
的取值进行去电,画图,测量,分别得到几组对应值,请将表格补充完成.
其中,
,
;
(2)在同一平面黄子佼坐标系中,描点
,并画出
的函数图像;
(3)当
为等腰三角形时,
的长度约为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac83d5f43897640c08bc0c4992c632d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8183037dd851accc1331ec5677b69bff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c8f00529730a31057974f5f4a91bf94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d19f6c71e82001bb106b6f1389046b79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5541e5b51b67cc10842e94ecfb8ce4da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1106faf20d6bcfc3c7534fe7a425733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c1491c18ec3e4a0e0bd2334da53c838.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1032dbdde50ce13878065b67165c0052.png)
数学兴趣小组的小刚根据学习函数的经验,分别对函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7404d4aa0f0bcfe7ebf45d3eeab3cdb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)根据下表中自变量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
0 | 1 | 2 | 3 | 4 | 5 | 6 | |
3 | 2.22 | 3 | 4.11 | 5.39 | 6.72 | ||
4.24 | 2.81 | 1.39 | 0 | 2.84 | 4.26 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
(2)在同一平面黄子佼坐标系中,描点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39517de9325c77cc8221ea1d46985ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7404d4aa0f0bcfe7ebf45d3eeab3cdb6.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2fac8910249a25376a455fb48f55bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/19/7a1757d4-efb7-4b9c-ac84-0591be49d659.png?resizew=407)
更新时间:2020-03-28 21:23:17
|
相似题推荐
解答题-作图题
|
适中
(0.65)
名校
【推荐1】如图1,在正方形
中,
,动点P从点A出发,沿A→B→C→D运动,当点P运动到点D时停止运动,连接
、
,记点P运动的路程为x,
的面积为y.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/15/b33d6ff4-2b9a-4447-8f9e-7254dbdcf18b.png?resizew=341)
(1)分别写出y与x之间的关系式,注明自变量x的取值范围,并在图2所示的平面直角坐标系中画出这个给函数的图像;
(2)观察函数图像,写出该函数的一条性质;
(3)结合所画图像直接写出当
时,x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da7bcea5a45eeae211f5851f12a7517.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/15/b33d6ff4-2b9a-4447-8f9e-7254dbdcf18b.png?resizew=341)
(1)分别写出y与x之间的关系式,注明自变量x的取值范围,并在图2所示的平面直角坐标系中画出这个给函数的图像;
(2)观察函数图像,写出该函数的一条性质;
(3)结合所画图像直接写出当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eeafaa6479bcc807813868a124b56ff.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】如图,在矩形
中,
,
,点P从点B出发,沿折线
运动,当点P运动到点A时停止运动.设点P运动路程为x,
的面积为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/5/ba439ef7-989f-4198-871a-7434309f93bc.png?resizew=401)
(1)直接写出
与x的函数关系,并注明x的取值范围;
(2)在给出的平面直角坐标系中画出
的函数图象,并写出它的一条性质;
(3)函数
的图象如图所示,请利用图象,直接写出当
时,自变量x的值.(结果精确到0.1,误差不超过0.2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/315c631a0924534a945af0bade30ca06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998cf61f4b1bc52ecfdc84fbc0e25550.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/5/ba439ef7-989f-4198-871a-7434309f93bc.png?resizew=401)
(1)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
(2)在给出的平面直角坐标系中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
(3)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26cf643df5a0350d7b26b28c797eeca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1292c47f62023b747f1a4bd615c75284.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
名校
【推荐3】如图,点
是
上的动点,以
为旋转中心,将线段
绕
点顺时针旋转,使得点
落在弦
上得到点
,作直线
,若
,点
是
上一定点,过点
作
于点
.
![](https://img.xkw.com/dksih/QBM/2022/4/10/2955203842924544/2955696981024768/STEM/f05b30d3-5d74-4447-b7e0-2496cd682de4.png?resizew=212)
小李尝试结合学习函数的经验,对线段
,
,
的长度之间的关系进行探究.请将以下小李的探究过程补充完整.
(1)列表:如表的数据是根据点
在
上的不同位置进行画图,通过测量线段
,
,
的长度,分别得到了几组对应值:
在
,
,
的长度这三个量中,确定______的长度是自变量,另外两条线段的长度都是这个自变量的函数
;
(2)描点,连线:在同一平面直角坐标系
中,画出(1)中所确定的两个函数的图象;
![](https://img.xkw.com/dksih/QBM/2022/4/10/2955203842924544/2955696981024768/STEM/a137cfe1-ba25-4cb9-a8a5-b671778525d0.png?resizew=208)
(3)解决问题:结合图象,当
时.
的长度大约是______
(保留两位小数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e430f13f42cf2d44aa0f0e20b959684f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2a674be86c785995898ec30d6799568.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6065b950a9bca8e20d83f619219f896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/2022/4/10/2955203842924544/2955696981024768/STEM/f05b30d3-5d74-4447-b7e0-2496cd682de4.png?resizew=212)
小李尝试结合学习函数的经验,对线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365822bd3945e6a3e871ca979c84cc12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
(1)列表:如表的数据是根据点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365822bd3945e6a3e871ca979c84cc12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
位置 线段 | ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365822bd3945e6a3e871ca979c84cc12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(2)描点,连线:在同一平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2beb91f10d2d8f2aa0dcc3f5cd1598.png)
![](https://img.xkw.com/dksih/QBM/2022/4/10/2955203842924544/2955696981024768/STEM/a137cfe1-ba25-4cb9-a8a5-b671778525d0.png?resizew=208)
(3)解决问题:结合图象,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c78a9d797dc6a096b23b87767cd08fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72026e70f45cea6a7c49881592e73a02.png)
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