回復 83# tsusy 的帖子
選擇2.
設直線\(L\):\(\cases{x+y-3z=3\cr 2x+2y-z=1}\)與球面\(S\):\(x^2+y^2+z^2=4\)交於\(A,B\)兩點,則球面\(S\)上\(A,B\)兩點間的最短路徑長為何?
(A)\(\displaystyle \frac{\pi}{3}\) (B)\(\displaystyle \frac{2\pi}{3}\) (C)\(\displaystyle \frac{4\pi}{3}\) (D)\(\displaystyle \frac{3\pi}{2}\)
附件
-
1591191992680-1881800934.jpg
(606.26 KB)
-
2020-6-3 21:47