某数学兴趣小组根据学习函数的经验,对分段函数
的图象与性质进了探究,请补充完整以下的探索过程.
(1)填空:
______,
______.
(2)①根据上述表格补全函数图象;
(3)若直线
与该函数图象有三个交点,直接写出t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0715439e9a459a4d67aeb9614803398.png)
x | … | ![]() | ![]() | 0 | 1 | 2 | 3 | 4 | … |
y | … | ![]() | ![]() | ![]() | 0 | 1 | 0 | ![]() | … |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
(2)①根据上述表格补全函数图象;
(3)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aeabebd5bd9968bf5604ae1243476b3.png)
更新时间:2022-01-12 12:30:42
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相似题推荐
解答题-计算题
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【推荐1】某数学小组对反比例函数中变量发生变化时进行探究;
(1)问题情景:已知反比例函数
中,当自变量x减小3,因变量y减小2后,所得积依然是
,写出y与x的函数表达式.
(2)活动探究:①列表:根据问题情景中所求函数关系式计算并补全 表格.
②描点:根据表中数据,继续描出①中剩余的点
.
③连线:在平面直角坐标系中,请用平滑的曲线画出该函数的图象.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/28/c2f2df9c-d991-4f5e-97ad-46ba783b36ff.png?resizew=312)
(3)类比与思考:①结合函数的图像,说出两条不同类型的性质:______;______.
②所得的函数图像是由
的图像如何平移得到______.
(4)当所得函数值大于1时,x的取值范围是______.
(1)问题情景:已知反比例函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e2106783dfc565f66ee72a28338e9df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
(2)活动探究:①列表:根据问题情景中所求函数关系式计算并
![]() | … | ![]() | ![]() | 0 | 1 | 2 | 4 | 5 | 6 | 7 | 8 | … |
![]() | … | 2.8 | 3 | ![]() | 4 | 6 | ![]() | ![]() | 1 | 1.2 | … |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
③连线:在平面直角坐标系中,请用平滑的曲线画出该函数的图象.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/28/c2f2df9c-d991-4f5e-97ad-46ba783b36ff.png?resizew=312)
(3)类比与思考:①结合函数的图像,说出两条不同类型的性质:______;______.
②所得的函数图像是由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e2106783dfc565f66ee72a28338e9df.png)
(4)当所得函数值大于1时,x的取值范围是______.
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【推荐2】某景观公园内人工湖里有一组喷泉,水柱从垂直于湖面的喷水枪喷出,水柱落于湖面的路径形状是一条曲线.现有一个垂直于湖面的喷水枪,在距喷水枪水平距离为x米处,水柱距离湖面高度为y米.经测量得到如下数据:
请解决以下问题:
(1)如下图,在平面直角坐标系xOy中,描出了上表中y与x各对对应值为坐标的点.请根据描出的点,画出这条曲线;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/12/5743437c-9437-4881-ae51-4883562a311c.png?resizew=276)
(2)结合所画曲线回答:
①水柱的最高点距离湖面约______米;
②水柱在湖面上的落点距喷水枪的水平距离约为______米;
(3)若一条游船宽3米,顶棚到湖面的高度2米,为了保证游客有良好的观光体验,游船需从喷泉水柱下通过,如果不计其他因素,根据图象判断______(填“能”或“不能”)避免游船被喷泉喷到.
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | … |
| 2.50 | 2.88 | 3.00 | 2.87 | 2.50 | 1.88 | 1.011 | … |
(1)如下图,在平面直角坐标系xOy中,描出了上表中y与x各对对应值为坐标的点.请根据描出的点,画出这条曲线;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/12/5743437c-9437-4881-ae51-4883562a311c.png?resizew=276)
(2)结合所画曲线回答:
①水柱的最高点距离湖面约______米;
②水柱在湖面上的落点距喷水枪的水平距离约为______米;
(3)若一条游船宽3米,顶棚到湖面的高度2米,为了保证游客有良好的观光体验,游船需从喷泉水柱下通过,如果不计其他因素,根据图象判断______(填“能”或“不能”)避免游船被喷泉喷到.
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【推荐1】如图,二次函数图像顶点坐标为
,与x轴一个交点坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/adcfd282-f0c0-4b5f-a1a9-f3281128d4c9.png?resizew=150)
(1)该函数图像与x轴的另一个交点坐标为______;
(2)求这个二次函数的表达式;
(3)当
时,y的取值范围为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82021e3b713f7564729c29f05fe7bab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff32d26c8d44f5fb4813a19c1030a9f5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/adcfd282-f0c0-4b5f-a1a9-f3281128d4c9.png?resizew=150)
(1)该函数图像与x轴的另一个交点坐标为______;
(2)求这个二次函数的表达式;
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29abe9c421ef307db3c6f2ebf0cc8f68.png)
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【推荐2】设二次函数
(
,
是常数,
)
(1)判断该二次函数的图像与
轴的交点的个数,说明理由;
(2)若二次函数的图像经过点
,
,
三个点中的其中两个点,求该二次函数的表达式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f6f398c9bee9ce2ff67949e55d242f.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/20849c00c47cbdc43f18d53341b6c4e5.png)
(1)判断该二次函数的图像与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若二次函数的图像经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f910c4f060935d2c213aae42b9bf7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7ef960992dfb11fb987d7c26cb5e4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c9fedecb9560b9b49ef1c53041db72.png)
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【推荐1】如图,二次函数
的图象与一次函数
的图象交于
,
两点. C
为二次函数图象的顶点.
![](https://img.xkw.com/dksih/QBM/2014/2/14/1573704941715456/1573704947974144/STEM/173aa71a-1d8b-42d9-98c8-23210c462082.png)
(1)求二次函数
的解析式;
(2)定义函数f:“当自变量x任取一值时,x对应的函数值分别为y1或y2,若y1≠y2,函数f的函数值等于y1、y2中的较小值;若y1=y2,函数f的函数值等于y1(或y2).” 当直线
(k >0)与函数f的图象只有两个交点时,求
的值.
![](https://img.xkw.com/dksih/QBM/2014/2/14/1573704941715456/1573704947974144/STEM/2efa2a39e9014c3387d41799e737b5fb.png)
![](https://img.xkw.com/dksih/QBM/2014/2/14/1573704941715456/1573704947974144/STEM/dafd37e4a125466e99038b8275352f25.png)
![](https://img.xkw.com/dksih/QBM/2014/2/14/1573704941715456/1573704947974144/STEM/66eff35e311e4929b1d1a88fbd2b0b8d.png)
![](https://img.xkw.com/dksih/QBM/2014/2/14/1573704941715456/1573704947974144/STEM/bb8adc68175e465a810ec3635979f052.png)
![](https://img.xkw.com/dksih/QBM/2014/2/14/1573704941715456/1573704947974144/STEM/561ef3664dba4a9cb4534a89c5d114bb.png)
![](https://img.xkw.com/dksih/QBM/2014/2/14/1573704941715456/1573704947974144/STEM/173aa71a-1d8b-42d9-98c8-23210c462082.png)
(1)求二次函数
![](https://img.xkw.com/dksih/QBM/2014/2/14/1573704941715456/1573704947974144/STEM/2efa2a39e9014c3387d41799e737b5fb.png)
(2)定义函数f:“当自变量x任取一值时,x对应的函数值分别为y1或y2,若y1≠y2,函数f的函数值等于y1、y2中的较小值;若y1=y2,函数f的函数值等于y1(或y2).” 当直线
![](https://img.xkw.com/dksih/QBM/2014/2/14/1573704941715456/1573704947974144/STEM/7f78bfdaa59a4ca1bc363e4c6a54fa57.png)
![](https://img.xkw.com/dksih/QBM/2014/2/14/1573704941715456/1573704947974144/STEM/74b1dffe81084194b2f817a4d1c74741.png)
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【推荐2】在平面直角坐标系中,点
为坐标原点,设抛物线
的顶点为
.直线
与抛物线
交于
,
两点
.
(1)求
,
的值;
(2)若点
在线段
上任意一点,过
作
轴的垂线,垂足为
,
的延长线交抛物线
于点
,求线段
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa9454a005f38fc65b187d0a843d75ac.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/082990da1f11a1a7be4fc3935c0d526e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa9454a005f38fc65b187d0a843d75ac.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/9fca3734de79f7f50b552ef62b29dc7c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa9454a005f38fc65b187d0a843d75ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158e92b2ef515d26b9bd787d9d06fbb6.png)
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名校
【推荐1】如图,一次函数
的图象与反比例函数
的图象交于
,
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/22/3bc54f57-aaab-4bca-b5a2-8365254ae0b9.png?resizew=167)
(1)求反比例函数的表达式;
(2)直接写出不等式
的解集;
(3)设直线
与
轴交于点
,若
为
轴上的一动点,连接
,
,当
的面积为
时,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e8f77e3876694978a22975eff397375.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05621b18b7ffc991d9f30380e2e08fea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2801ced7e4279a7c4a98749d3d3118b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/185ab553e7cc882f2e184ce2ae16adef.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/22/3bc54f57-aaab-4bca-b5a2-8365254ae0b9.png?resizew=167)
(1)求反比例函数的表达式;
(2)直接写出不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd9dc328571a80d1342e89b9847449ed.png)
(3)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/760bb4b1dbcd14bebd12c219520597f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9524e3810e06dc781285f1289e75d653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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解答题-问答题
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(0.65)
【推荐2】如图,一次函数
的图象与反比例函数
的图象交于
两点,其中
.
的面积;
(2)请根据图象直接写出不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fceb9eb57ca36db386ffafeda213599c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7385795d7eab9691e21172c51a97428.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68bd442ec1baa948f45bc49137f8022c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
(2)请根据图象直接写出不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffdd821281e00d7af252aa3103b690e.png)
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