We should compute P t {\displaystyle P^{t}} for large t . {\displaystyle t.} In other words, we need to find lim t → ∞ P t . {\displaystyle \lim \limits _{t\to \infty }P^{t}.} In order to do this, we consider "Matrix Diagonalization" to write P = Q A Q − 1 , {\displaystyle P=QAQ^{-1},} and therefore P t = Q A t Q − 1 . {\displaystyle P^{t}=QA^{t}Q^{-1}.}
