Solution: Vectors
The cross product of 3-component vectors is defined as:
a = <a
1
, a
2
, a
3
>
b = <b
1
, b
2
, b
3
>
a x b = <a
2
b
3
- a
3
b
2
, a
3
b
1
- a
1
b
3
, a
1
b
2
- a
2
b
1
>
v x w = <9-10, 30-12, 8-18> = <-1, 18, -10>
Answer: <-1, 18, -10>