名校
解题方法
1 . 已知
是抛物线
的焦点,
是抛物线上的一个动点,
,则
周长的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50edfb9ed0d50d6f35ad6a130208d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceff3844281849df3e37a2e56e110549.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-04-29更新
|
1488次组卷
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9卷引用:四川省南充高级中学2021-2022学年高三第六次月考数学(文)试题
解题方法
2 . 如图,南北方向的公路
,
地在公路正东
处,
地在
北偏东
方向
处,河流沿岸曲线
上任意一点到公路
和到
地距离相等.现要在曲线
上某处建一座码头,向
,
两地运货物,经测算,从
到
,
修建公路的费用都为
万元
,那么,修建这两条公路的总费用最低是( )
![](https://img.xkw.com/dksih/QBM/2021/1/23/2642155370283008/2646815075647488/STEM/177b4ad833fe4cbb9e1131ed097ed0e9.png?resizew=102)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49432aa0a852e8bd59df6e0ef0eda48c.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/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bacde0eb9cb79cb62fc7898f52adc83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.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/ac047e91852b91af639feec23a9598b2.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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/355fe3d6107ed80ff49de68d3756fbe1.png)
![](https://img.xkw.com/dksih/QBM/2021/1/23/2642155370283008/2646815075647488/STEM/177b4ad833fe4cbb9e1131ed097ed0e9.png?resizew=102)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-01-29更新
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260次组卷
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2卷引用:四川省仪陇马鞍中学校2021-2022学年高二下学期第一次月考理科数学试题