设随机变量(X,Y)的概率密度为f(x,y)={3/8π(2-(x^2+y^2)^1/2,x^2+y^2=4,则(X,Y)落在圆域x^2+y^2
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![设随机变量(X,Y)的概率密度为f(x,y)={3/8π(2-(x^2+y^2)^1/2,x^2+y^2=4,则(X,Y)落在圆域x^2+y^2](/uploads/image/z/2341942-70-2.jpg?t=%E8%AE%BE%E9%9A%8F%E6%9C%BA%E5%8F%98%E9%87%8F%EF%BC%88X%2CY%EF%BC%89%E7%9A%84%E6%A6%82%E7%8E%87%E5%AF%86%E5%BA%A6%E4%B8%BAf%EF%BC%88x%2Cy%EF%BC%89%3D%EF%BD%9B3%2F8%CF%80%EF%BC%882-%EF%BC%88x%5E2%2By%5E2%EF%BC%89%5E1%2F2%2Cx%5E2%2By%5E2%3D4%2C%E5%88%99%EF%BC%88X%2CY%EF%BC%89%E8%90%BD%E5%9C%A8%E5%9C%86%E5%9F%9Fx%5E2%2By%5E2)
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设随机变量(X,Y)的概率密度为f(x,y)={3/8π(2-(x^2+y^2)^1/2,x^2+y^2=4,则(X,Y)落在圆域x^2+y^2
设随机变量(X,Y)的概率密度为f(x,y)={3/8π(2-(x^2+y^2)^1/2,x^2+y^2=4,则(X,Y)落在圆域x^2+y^2
设随机变量(X,Y)的概率密度为f(x,y)={3/8π(2-(x^2+y^2)^1/2,x^2+y^2=4,则(X,Y)落在圆域x^2+y^2
f(x,y)=(3/(8π))(2-(x²+y²)^(1/2)),x²+y²
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