l****y
发帖数: 92 | 1 lines y=n(n=...,-2,-1,0,1,2,...)are drawn in XY-plane. A needle of length
one is thrown randomly onto the plane, what is the probability that it
intersects some lines? | a*******s
发帖数: 1698 | 2 这个不是那个扔针求圆周率的模型吗？
【在 l****y 的大作中提到】
: lines y=n(n=...,-2,-1,0,1,2,...)are drawn in XY-plane. A needle of length
: one is thrown randomly onto the plane, what is the probability that it
: intersects some lines?
| l****y
发帖数: 92 | 3 thanks, I got it.
【在 a*******s 的大作中提到】
: 这个不是那个扔针求圆周率的模型吗？
| R********n
发帖数: 519 | 4 Zan, it is, I feel so funny when I first time heard of it in the high school
【在 a*******s 的大作中提到】
: 这个不是那个扔针求圆周率的模型吗？
| T*****G
发帖数: 21 | | p*****k
发帖数: 318 | 6 in case being asked for the general case, see:
http://en.wikipedia.org/wiki/Buffon%27s_needle |
|
