>
数学
>
已知定点A、B,且|AB|=4,动点P满足|PA|-|PB|=3,则|PA|的最小值是______.
人气:368 ℃ 时间:2019-10-26 07:06:13
解答
根据双曲线的定义可知P点轨迹为双曲线的右支,
c=2,2a=3,a=
3
2
当P在双曲线的顶点时|PA|有最小值
2+
3
2
=
7
2
故答案为:
7
2
推荐
已知定点A、B,且|AB|=4,动点P满足|PA|-|PB|=3,则|PA|的最小值是_.
已知定点A、B,且|AB|=4,动点P满足|PA|-|PB|=3,则|PA|的最小值是_.
已知定点A、B,且|AB|=4,动点P满足|PA|-|PB|=3,则|PA|的最小值是_.
已知定点A.B,│AB│=4,动点P满足│PA│-│PB| ,则|PA| 的最小值是多少
已知定点A,B.且AB=6.动点P满足PA-PB=4,则PA的最小值是
对任意正整数n,设计一个程序求s=1+1/2+1/3+…+1/n的值.
《伤仲永》原文及翻译
I spend an hour reading books in the library every day.(改为同义句) ( ) ( ) me an hour ( ) ( )
猜你喜欢
英语翻译
someone is singing in the next room.同义句转换 ( ) ( ) someone singing in the next room
解二道一元二次方程,1.X²+3=2√3 ̄ X 2.3y²+4=y²
矩阵求导
Jim will play the violin at the party.的同义句 Jim __ __ __ play the violin at the party.
live on the 住在墙上?
The doctor says I am a little fat and can't eat too many.(改错)
小学四年级上册语文园地六的作文(写生活中的真事)
© 2024 79432.Com All Rights Reserved.
电脑版
|
手机版