如图所示,在直线l上有若干个点A 1 、A 2 、…、A n ,每相邻两点之间的距离1,点P是线段A 1 A n 上的一个动点. (1)当n=3时,则点P分别到点A 1 、A 2 、A 3 的距离之和的最小值是( ); (2)当n=11时,则当点P在点( )的位置时,点P分别到点A 1 、A 2 、…、A 11 的距离之和有最小值,且最小值是( ).
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【简答题】Dialogue 9 Subway to Manhattan --- To get to Manhattan which subway should I take, A or B? --- You should take B, but you’re going to need to transfer to the Line C at the next stop. --- How long is...
【简答题】补全对话 A. It is about a 5-minute walk. B. You can’t miss it. C. You’d better take the subway. D. You’re welcome. E. Turn righ at the first traffic lights. Alice: Excuse me, can you tell e how to get to ...