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dragonloon

新虫 (初入文坛)

[求助] 求干旱重现期

弄了很久,都没能算出来。很是着急
在附件文献table4中,θ可取0.339、0.354、0.400、0.461、0.277、0.215等值,设T为[5,110]的某个数(如Fig6),代入公式(2)。由F=1-1/Tθ,无论如何都求不出marginal cumulative distribution FD(d)为正数。
为什么呢?急求高手解答!非常感谢!
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