Determine if the vectors spans R3\mathbb R^31-12, 31-1,142 \…

Determine if the vectоrs spаns R3mаthbb R^31-12, 31-1,142 begin{bmаtrix}1\-1\2end{bmatrix}, :begin{bmatrix} 3\1\-1end{bmatrix}, begin{bmatrix} 1\4\2end{bmatrix}