求解随机变量公式.{a < X £ b} = {X £ b}-{X £ a}&pou
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求解随机变量公式.
{a < X £ b} = {X £ b}-{X £ a}
£符号,采随机变量公式里代表什么?
{a < X £ b} = {X £ b}-{X £ a}
£符号,采随机变量公式里代表什么?
![求解随机变量公式.{a < X £ b} = {X £ b}-{X £ a}&pou](/uploads/image/z/19445392-64-2.jpg?t=%E6%B1%82%E8%A7%A3%E9%9A%8F%E6%9C%BA%E5%8F%98%E9%87%8F%E5%85%AC%E5%BC%8F.%7Ba+%3C+X+%26pound%3B+b%7D+%3D+%7BX+%26pound%3B+b%7D-%7BX+%26pound%3B+a%7D%26pou)
若ξ是一个连续型随机变量,其密度函数是p(x),又函数y=f(x)为严格单调函数,其反函数x=g(y)有连续导数,则η=f(ξ)也是连续型随机变量,其密度函数为:Ψ(y)==p[g(y)]|g′(y)|,当γyβ时;0,当y≤α或y≥β时.(1)其中:α=min{f(-∞),f(+∞)},β=max{f(-∞),f(+∞)}.
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