Let a = 2 i + _1 j + 3 k, b = 4 i + (3 - _2) j + 6 k, and c = 3 i + 6 j + ( _3 - 1) k be three vectors such...

Question

Let a = 2 i + _1 j + 3 k, b = 4 i + (3 - _2) j + 6 k, and c = 3 i + 6 j + ( _3 - 1) k be three vectors such that b = 2 a and a is perpendicular to c. Then a possible value of ( _1, _2, _3) is:

Accepted Answer

(C)

JEE Main 2019 Mathematics question

Solution