1axbxc=
(a.c).b -(a.b).c
1. If a = i + j + k , b = 4 i + 3 j + 4 k
and c = i + a j + b k are linearly
dependent vectors and |c| = 3 , then
(1) a = 1, b = - 1
(2) a = 1, b = ± 1
(3) a = - 1, b = ± 1
(4) a = ± 1, b = 1
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4 Answers
13the ques is not clear...i mean a, b vectors hain ya scalars....
nd if mod c = 3 then how can either a or b be +1 or -1