+0

# Help please quickly ASAP!!!!!

0
59
1

Let $$\mathbf{A}$$ and $$\mathbf{B}$$ be invertible matrices such that $$\mathbf{A} \begin{pmatrix} 2 \\ -1 \end{pmatrix} = \begin{pmatrix} 1 \\ 2 \end{pmatrix} \text{ and } \mathbf{B} \begin{pmatrix} 1 \\ 3 \end{pmatrix} = \begin{pmatrix} 2 \\ -1 \end{pmatrix}.$$
Calculate $$(\mathbf{A}\mathbf{B})^{-1} \begin{pmatrix} 1 \\ 2 \end{pmatrix}.$$

Oct 13, 2019