Textile Engineering > GATE 2019 > Linear Algebra
Let a⃗ = λî - 9ĵ - k̂, b⃗ = 3î + 3ĵ + k̂, and c⃗ = 4î + 2ĵ + k̂. What is the value of λ for which the vector a⃗ is perpendicular to b⃗ × c⃗?

Correct : 3

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