Find a matrix A {\textstyle A} that has eigenvectors v → 1 = [ 1 0 ] {\textstyle {\vec {v}}_{1}=\left[{\begin{array}{c}1\\0\end{array}}\right]} and v → 2 = [ 2 1 ] {\textstyle {\vec {v}}_{2}=\left[{\begin{array}{c}2\\1\end{array}}\right]} , corresponding to eigenvalues λ 1 = 1 {\textstyle \lambda _{1}=1} and λ 2 = 2 {\textstyle \lambda _{2}=2} .