\endvmatrix = \mathbfi(0 \cdot 2 - 1 \cdot 1) - \mathbfj(1 \cdot 2 - 1 \cdot 0) + \mathbfk(1 \cdot 1 - 0 \cdot 0) = \langle -1, -2, 1 \rangle - go-checkin.com