JEE Main 2026 Mathematics question
Let the vectors and . For some λ, μ ∈ ℝ, let . If and , then ||² is equal to:
Answer: (B)
Solution
Solving gives λ = 1, μ = −1, so = (−2, −2, 2) and ||² = 12.
Let the vectors and . For some λ, μ ∈ ℝ, let . If and , then ||² is equal to:
Solving gives λ = 1, μ = −1, so = (−2, −2, 2) and ||² = 12.