神马作文网a swimmer is at a point 500m from the closest point on a str
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a swimmer is at a point 500m from the closest point on a straight shoreline.she needs to reach a cottage located 1800m down shore from the closest point.if she swims at 4M/s,and walks at 6M/s,how far from the cottage should she come ashore so as to arrive at the cottage in the shortest time.
这是道几何题吧.一个游泳者距离海岸线最近的点有500m.她要去距离这个最近的点1800m的岸上的一个小屋,如果她的游泳速度是4m/s,步行速度是6m/s,那么如果她要在最短时间内到达小屋需要移动多远的距离?(也就是两点之间直线最短的问题吧)
a swimmer is at a point 500m from the closest point on a str
show that the point C(9,3) is at the same distance from A(2,
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There is a point to
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英语翻译Beginning at a point on the north boundary line of said
There is a point at which methods devour themselves