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[情報] 數甲解答(俞克斌老師提供)
[ SENIORHIGH ]66 留言, 推噓總分: +26
作者: lodolo - 發表於 2019/07/02 20:26(4年前)
44F噓t0444564: 紅明顯，答案就兩個點。給參數式作為答案，顯然錯誤。07/02 22:46
45F→t0444564: 雖然我覺得答案只有一個點才是啦...畢竟向量夾角60度07/02 22:47
47F→t0444564: 反方向就夾120度了。07/02 22:47
50F推t0444564: 我錯了, t=sqrt(3)與t=-sqrt(3)/3都是解07/02 23:01
51F推t0444564: typo, t=sqrt(2)與t=-sqrt(2)/2, 總之某樓說的那兩個點07/02 23:05
52F→t0444564: 是對的07/02 23:05
[討論] 大考中心 出包消失
[ SENIORHIGH ]900 留言, 推噓總分: -175
作者: joeyhsu10 - 發表於 2018/08/10 01:21(5年前)
771F噓t0444564: 唉08/10 14:20
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