What is the trace of AkA^kAk where A=(2103)A = \begin{pmatrix} 2 & 1 \\ 0 & 3 \end{pmatrix}A=(2013)?
2k+3k2^k + 3^k2k+3k
5k5^k5k
2k−3k2^k - 3^k2k−3k
6k6^k6k