[笑話] 牛郎跟織女最短多久見面一次?

[RunRun5566 (冒險是為了不後悔)]

牛郎跟織女  最快多少年會見面一次?



















Please find the answer carefully , part of points will be given depending

on your calculation process. (30 points)

(If what we know is just the distance of each person from earth)
(And assume that the highest speed in university is 光年/year)














Cause' 牛郎星距離地球16光年

and 織女's  27光年

地球分別指到兩者形成長度分別為16及27的方向向量

當兩個方向相同的condition下  相減取絕對值會有最小值

也就是 27-16 = 11 光年

If 牛郎 and 織女 take the speed of one 光年 per year , and travel

with opposite direction right foward each other , then we can

assume that , they will meet each other in 5.5 光年.   <--Answer here
                                          --------










Point earned : 23

















Dear Professor Mr.Rodriguez:


I've seen the grade of my final exam , but I have one question.

Why I just got  93 points in consequence . I've examined all the

answer I worte down in the exam , and all are perfect ! Could you

show me which anwser of my paper's worng , I'm really willing

to know!

                                       thank you a lot , Mr.Kuo








To student Kuo:


Beautiful calculation , Mr.Kuo!

But you forgot to add the time about getting back to their home ,so

the answer in this question might be 5.5 * 2 = 11 year .

Wish you have fun in the winter vacation !


                                              Professor , Rodriguez







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※ 編輯: RunRun5566 (220.134.16.11), 02/12/2015 17:15:38
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