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其实就是线性差分方程,$a_n-pa_{n-1}=q$,当$p\neq1$时通解是$Cp^t+\frac{q}{1-p}$,代入初值算出常数$C$ ... abababa 发表于 2017-3-25 10:05
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2025-7-15 14:17 GMT+8
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