Posted by haifeng on 2017-06-22 10:15:23 last update 2017-06-22 10:34:01 | Answers (1) | 收藏
设 $A\in\mathcal{M}(2,\mathbb{R})$, 即 $2$ 阶实方阵, 且 $\mathrm{tr}(A)=0$, 求 $A^2, A^3,\ldots, A^n$.
求 $e^A=\exp(A):=\sum_{n=0}^{+\infty}\frac{A^n}{n!}$
