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Question: 1413 46 letu 4 and a 5 9is u in...

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1.4.13 4-6 Letu 4 and A 5 9Is u in the plane in R3 spanned by the columns of A? Why or why not? Select the correct choice below and fill in the answer box to complete your choice (Type an integer or decimal for each matrix element.) O A. Yes, multiplying A by the vector writes u as a linear combination of the columns of A. OB. No, the reduced row echelon form of the augmented matrix is, which is an inconsistent system.1.4.19 Can each vector in R4 be written as a linear combination of the columns of the matrix A? Do the columns of A span R4? 2 4 8 0-4 2 -12 2 0 3 -8 Can each vector in R be written as a linear combination of the columns of the matrix A? Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or decimal for each matrix element.) O A. Yes, because the reduced row echelon form of A is OB. No, because the reduced row echelon form of A is

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