Let A=(0110)A = \begin{pmatrix} 0 & 1 \\ 1 & 0 \end{pmatrix}A=(0110). What is the eigenspace for λ=−1\lambda = -1λ=−1?
Span{(1−1)}\{\begin{pmatrix} 1 \\ -1 \end{pmatrix}\}{(1−1)}
Span{(11)}\{\begin{pmatrix} 1 \\ 1 \end{pmatrix}\}{(11)}
Span{(01)}\{\begin{pmatrix} 0 \\ 1 \end{pmatrix}\}{(01)}
Span{(−1−1)}\{\begin{pmatrix} -1 \\ -1 \end{pmatrix}\}{(−1−1)}