If A=(01−10)A = \begin{pmatrix} 0 & 1 \\ -1 & 0 \end{pmatrix}A=(0−110), what is A4A^4A4?
I=(1001)I = \begin{pmatrix} 1 & 0 \\ 0 & 1 \end{pmatrix}I=(1001)
AAA
−I-I−I
000