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A description of a probability distribution which is related to the Laplace transform. Use also for its logarithm, the cumulant generating function.

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Expected Value using Moment Generating Function [closed]

Let $M_Xt$ be the MGF of the random variable $X$. Define $S_X(t)=log_{10}M_xt$. I am trying to show that $\frac{d}{dt}S_X(t)|_{t=0}=E[X]$ Here's what I did: $$E[X]=\frac{d}{dt}M_X(t)|_{t=0}$$ $$\frac …
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