题目:设二维随机变量(X,Y)的概率密度为f(x,y)={e^[-(x2+y2)/2]/π,x2+y2≤4,0,其他,则P(0<X<1,0<Y<1)= _______.
2024-11-12
题目:设二维随机变量(X,Y)的概率密度为f(x,y)={e^[-(x2+y2)/2]/π,x2+y2≤4,0,其他,则P(0<X<1,0<Y<1)= _______.
A. (1-e^-1/4)(π/4)
B. (1-e^-1)(π/4)
C. (1-e^-1/4)
D. (1-e^-1)
正确答案:A
试题解析:暂无