是x的连续型随机变量的概率分布。
本文通过引进“概率元”，把连续型和离散型两类求概率分布的方法统一起来，建立起“概率元法”的理论及其计算方法。
Introduced is this paper are the probability differential method and the unify way of calculating the probability distribution of the continuous type and that of the discrete type.
概率分布为离散型和连续型两种。
Probability distributions are classified as either discrete or continuous.
概率分布为离散型和连续型两种。
Probability distributions are classified as either discrete or continuous.
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