JEE Main 2024 Mathematics question

MathematicsVector AlgebraJEE Main 2024

Let , . Let be the vector such that and . Then is equal to :

Answer: (A)

Solution

Crossing a×c = b with a: (a·c)a − (a·a)c = a×b. Here a×b = 9î − 9k̂ and a·a = 6, so 3(î + 2ĵ + k̂) − 6c = 9î −

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Question ID VK-016726