Question
Mathematics Question on Vector Algebra
If 2i - j + 3k, -12i - j - 3k, -i + 2j -4k and λi + 2j - k are the position vectors of four coplanar points, then λ =
A
9
B
-2
C
8
D
6
Answer
6
Explanation
Solution
The correct option is: (D) 6
If 2i - j + 3k, -12i - j - 3k, -i + 2j -4k and λi + 2j - k are the position vectors of four coplanar points, then λ =
9
-2
8
6
6
The correct option is: (D) 6