43406 薛昭雄來函暨林開亮回覆(上)

"如解方程 $$250x\equiv1\pmod {2017},(1)$$ 你可能就無計可施了！"

### 參考文獻

John R. Silvester, A matrix method for solving linear congruences. Math. Mag. 53(2) (1980), 90-92. Richard S. Millman, Peter J. Shiue and Eric Brendan Kahn, Problems and Proofs in Numbers and Algebra, Springer International Publishing Switzerland, 2015.

Ordinarily, we motivate the Laplace transform by appealing to initial value problems for linear differential equations with constant coefficients. But this motivation is rather thin: taking inverse Laplace transforms is no joke and initial value problems can be solved in other ways. I do not know how to properly motivate the Laplace transform $\cdots$

### 參考文獻

---本文作者任教於中國西北農林科技大學---