If A=(5005)A = \begin{pmatrix} 5 & 0 \\ 0 & 5 \end{pmatrix}A=(5005), what is the eigenspace associated with λ=5\lambda = 5λ=5?
All of R2\mathbb{R}^2R2
Only the vector (00)\begin{pmatrix} 0 \\ 0 \end{pmatrix}(00)
The x-axis
The y-axis