Mathematics · Vector Algebra
The vectors λi + j + 2k, i + λj - k, and 2i - j + λk are coplanar if:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1λ = -1
- 2λ = 1
- 3λ = 0
- 4λ = -2✓
Correct answer
λ = -2
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