Help on Vectors & Geometry
posted by Wellness .
(a) Given that A= 3i - j + 2k and
B=2i + 3j - k find A x B
(b) if A= i + j, B= 2i - 3j + k and
C= 4j - 3k
find (i) (AxB)x C
I will do one. These are much easier to do as matrix multipication on your calc, I would learn to do that.
kxi=j (and the opposite order means -)
check that, and combine terms.