問題詳情

19. (5%) If Y is uniformly distributed over [0, 5], what is the probability that the rootsof the equation 4x2 + 4xY +Y +2= 0 are both real?
(A) 1/5
(B) 2/5
(C) 1/2
(D) 3/5
(E) 4/5

參考答案

答案：D
難度：計算中-1
書單：沒有書單，新增