Question

🎶

求解～

e
0
D
10
3
(3) AD = (X-5,1-4,6) X-J=-3 X-2 44 =3
12. 如右圖,A-BCD 為正四面體,其邊長為6,PAD上,P' (54,b)
AP=2DP,Q在CD之中點,則BP.AQ = 60。
①周
計
四 混合題
+
(+):(+)
(a)
R(X,Y, 0)
2A
B
6
S
1 x x x z + + x x = + x + 16×2 = -3=3+12
PORS H› PO = PR = PS = √10' QS = RS = 4
= (