問題詳情

33. Given the row-reduced echelon form

of a matrix A. What is the closest vector to b = [0,3,0, 1]T in the row space of A?
(A) [1,1,2,0]T
(B) [0,-2,-1,1]T
(C) [-1, 2,0, -1]T
(D) [-1,2,1,0]T
(E) [1,1,3,1]T

參考答案

答案：D

統計：A:0,B:0,C:0,D:0,E:0

難度：計算中