1
1
35
PQ = 59 +36+4
P(-2,-31)
all,3,3)
演練 = ()
vix T2 = 19, 18, 6) 11 (3,6,2)
14
2
已知兩
歪斜線L:
x + z = 2
(y=0
與L: :
{ x=0
12-0
求L與L的距離,
解
I p lt, 0, 2-t)
Qlois ,o)
PQ ovio = -t tart
PQ . J2 = 0 = 5
RE:【一七,4,-2)
(2)
2550
Vi= (1,01-1)
Va= 2001,0)
EQ=1 tot 1 & 2