\mathbfM \beginbmatrix 1 \\ 0 \endbmatrix = 3 \cdot \beginbmatrix 1 \\ 0 \endbmatrix + 1 \cdot \beginbmatrix 0 \\ 1 \endbmatrix = \beginbmatrix 3 \\ -2 \endbmatrix, \quad \mathbfM \beginbmatrix 0 \\ 1 \endbmatrix = 1 \cdot \beginbmatrix 1 \\ 0 \endbmatrix + 4 \cdot \beginbmatrix 0 \\ 1 \endbmatrix = \beginbmatrix 1 \\ 4 \endbmatrix. - Nelissen Grade advocaten