Teaching AP DSC School Assistant 2025 Mock Test Series Mathematics Vector Algebra Scalar Triple Product
The vectors \(λ \widehat i + \widehat j + 2\widehat k\), \(\widehat i + λ \widehat j - \widehat k\) and \(2\widehat i - \widehat j + λ \widehat k\) are coplanar if λ =
1
-2
2
0
3
1
4
-1