Suppose you built a Markov transition matrix to model the daily switches between bull, bear, and flat markets. Using only linear algebra, how would you find the long-term probability of the market being in each state?

假设你建了一个马尔可夫转移矩阵，描述每天市场在牛市、熊市、震荡市间的切换。只用线性代数，你怎么算出市场长期处于每种状态的概率？