Vectors and Geometry
posted by Peaklife .
if A=i+j, B=2i3j+k and C=4j3k
find
(i) (AxB)xC & Ax(BxC)

I'll start this out, using the determinant rule for vector cross products. You do the last part, and check my work for errors.
A x B =
i j k
1 1 0
2 3 1 = i j 5k
(AxB) x C =
i j k
1 1 5
0 4 3 = 17i + 3j +4k
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