# URGENT VECTOER EQUATION HELP

• Nov 11th 2008, 04:22 AM
bob_smith
URGENT VECTOER EQUATION HELP
1. Compute a Cartesian equation for the plane through the points (1, 2,3), (2, 5, 7) and (1, 1, 3).

2. Adapt the method used in (i), to compute a Cartesian equation for the plane through (1,3, 1) and parallel to the plane through (2,2, 3), (4, 1,1) and (1, 1,1).

can some 1 help me with these two question. ASAP!!

• Nov 11th 2008, 04:25 AM
mr fantastic
Quote:

Originally Posted by bob_smith
1. Compute a Cartesian equation for the plane through the points (1, 2,3), (2, 5, 7) and (1, 1, 3).

2. Adapt the method used in (i), to compute a Cartesian equation for the plane through (1,3, 1) and parallel to the plane through (2,2, 3), (4, 1,1) and (1, 1,1).

can some 1 help me with these two question. ASAP!!

(Accidental) double post.
• Nov 11th 2008, 04:31 AM
bob_smith
Quote:

Originally Posted by mr fantastic
(Accidental) double post.

$\displaystyle (2,5,7)\times(1,2,3)=(1,1,-1)$
$\displaystyle x+y-z=c \mbox{ for some }c$
Sub in the other point $\displaystyle (-1,1,3)$ to find $\displaystyle c$.