先列出下列问题中的函数表达式,再指出它们各属于什么函数.
(1)电压为16V时,电阻R与电流I的函数关系;
(2)食堂每天用煤1.5t,用煤总量W(t)与用煤天数t(天)的函数关系;
(3)积为常数m的两个因数y与x的函数关系;
(4)杠杆平衡时,阻力为800N,阻力臂长为5cm,动力y(N)与动力臂x(cm)的函数关系(杠杆本身所受重力不计).
(1)电压为16V时,电阻R与电流I的函数关系;
(2)食堂每天用煤1.5t,用煤总量W(t)与用煤天数t(天)的函数关系;
(3)积为常数m的两个因数y与x的函数关系;
(4)杠杆平衡时,阻力为800N,阻力臂长为5cm,动力y(N)与动力臂x(cm)的函数关系(杠杆本身所受重力不计).
2023八年级下·浙江·专题练习 查看更多[2]
更新时间:2023-06-02 10:00:04
|
相似题推荐
解答题-作图题
|
较易
(0.85)
【推荐2】已知函数
,且
为x的正比例函数,
为x的反比例函数,且当
时,
;当
时,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/5/47104dad-ad8a-4d86-a4ec-7dd4922fd940.png?resizew=191)
(1)求y关于x的函数解析式;
(2)在平面直角坐标系中画出(1)中函数的图象.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845a73eeb5503d7b95dafee8dd0fece8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107babba45f110012183dc4dc54490f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8076b511e27939c629762296b8cfd08.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/5/47104dad-ad8a-4d86-a4ec-7dd4922fd940.png?resizew=191)
(1)求y关于x的函数解析式;
(2)在平面直角坐标系中画出(1)中函数的图象.
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐1】下列等式中,哪些是反比例函数?
(l)
; (2)
; (3)
,
(4)
; (5)
; (6)
.
(l)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eaeeef60273e0fbec9b47d608059f01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b33a49a5c53092add40ea535d848d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eb23da01952ea6b6bd8515fa3490cda.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98cc62a83cfcce24a43d7f26f124d646.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5935607525b484c47c885a2c4564f406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b3493fb8a087011fe3fe5d650a250e5.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】已知反比例函数
.
(1)说出比例系数.
(2)求当
时函数的值.
(3)求当
时自变量x的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca569abc9eed398b748c575e4a5328f1.png)
(1)说出比例系数.
(2)求当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10dac68a370ad39b33700054bd848f24.png)
(3)求当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbd7b4b93c8ea071859af3c0583fc59.png)
您最近一年使用:0次