複選題十三. Let X be a continuous random variable with probability density function Sx. In addition, fx(x) = , (0, 1]. Furthermore, P(X ＞ 1) = P(X ≤ 0) = 0. Moreover,f jx(t) ＜∞ , Vt E (-∞,∞). Which of the following statements is/are true? (A)(B)(C) (D) (E)

複選題ㆍLet A be an m✕ n real-valued matrix of rank r. and b be an m✕ 1 real-valued vector. Which of the following statement is/are true? (A). The equation Ax = b has non-trivial solutions if n ＞ r ＞ 1 and b is all-zero. (B). The equation Ax = b has solutions if b belongs to the column space of A. (C). The equation Ax = b has only one solution when r = m. (D). The dimension of the nullspace of A is O if the dimension of the row space of A is r. (E). None of the above is true.

複選題
十三. Let X be a continuous random variable with probability density function Sx. In addition, fx(x) = , (0, 1]. Furthermore, P(X ＞ 1) = P(X ≤ 0) = 0. Moreover,f jx(t) ＜∞ , Vt E (-∞,∞). Which of the following statements is/are true?
(A)
(B)
(C)
(D)
(E)

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