Question

(a) If a, b, c, are three vectors such that a.a = a.c, a x b =a x c, a≠ 0 then prove that b = c.


(b) if a = I - 2j – 3k, b = 2i + j – k and c = I + 3j – 2k, then find a x ( b x c).​

Answer 1

Answer:

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