問題詳情

5.10% Let A be a m x n matrix with rank n and column space. For any vector b in Rm,we say that the projection of b onto the column space  is Ax if the Euclidean distance ||b - At|| for any t in Rn is minimized wfien t = x.
(a)Find the solution x such that Ax is the projection of b onto . (Hint: Differentiate (b - Ax)T(b - Ax) with respect to the vector x to have an equation.)

參考答案

答案:B
難度:簡單0.87775
統計:A(55),B(2434),C(271),D(13),E(0) #
個人:尚未作答書單:政策

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