I have the following sum and obviously i need to calculate it. $$\sum_{k=0}^{\infty} \frac{(2\lambda)^k}{k!}$$ What is the simplest method to find this sum? I was thinking about matching this with Poisson distribution, unfortunately i have no idea how to approach that.
2026-04-02 13:01:00.1775134860
Summation of a series, possibly simmilar poisson ditribution formula
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