Question: Let X be a random variable such that R(t) = E(et (Xb) ) exists for t such that h < t < h. If m

Let X be a random variable such that R(t) = E(et^(X−b)) exists for t such that −h < t < h. If m is a positive integer, show that R^(m)(0) is equal to the mth moment of the distribution about the point b.

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