三角形的周长是
,三边长分别是:
,则以x(单位:
)为自变量表示y的函数关系式是________ ,自变量x的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc933c59790e1e90837c1ffe02f449f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49f84a17ab23c22a87ac073fb66c0a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
更新时间:2022-08-20 19:59:52
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【推荐1】如图,在
中,边
长为10,
边上的高
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在
上运动,设
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的面积
与
之间的关系式___ .
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【推荐1】已知三角形的两边长分别为2和7,若第三边
为整数,则
的最大值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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【推荐2】长为l的一根绳,恰好可围成两个全等三角形,则其中一个三角形的最长边x的取值范围为__________ .
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