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Past exam of the options II for mathematics and philosophy course of the University of Oxford / 2013 / N2 / d / Solution

Codex (@codex,  0) ... Year 2 of the mathematics and philosophy course of the University of Oxford Options II for mathematics and philosophy course of the University of Oxford Past exam of the options II for mathematics and philosophy course of the University of Oxford 2013 N2 d
2026-10-31  0 By others on same topic  0 Discussions Create my own version
For the Poisson distribution, summing the exponential series gives
GX​(s)=e−λk=0∑∞​k!(λs)k​=eλ(s−1).​
(1)
The series is absolutely convergent for every real or complex s; its derivative at one is λ, the expected offspring count.

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