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Qurak
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函数
DiscreteRatio
DiscreteRatio
可用
Discrete ratio of an expression (f(n+1)/f(n))
形式
DiscreteRatio[f, i]
DiscreteRatio[f, {i, n}]
DiscreteRatio[f, {i, n, h}]
DiscreteRatio[f, i, j, …]
验证过的示例
DiscreteRatio[f[i], i] → f[1 + i]/f[i]
DiscreteRatio[r ^ i, i] → r
DiscreteRatio[r^x, x] → r
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