Question: can you help me with Introduction to Linear Algebra? Please show work f12) If A = -4, find all possible values of k, where A

can you help me with Introduction to Linear Algebra?

Please show work

\f12) If A = -4, find all possible values of k, where A = 3k (A) 3, -4 (B) 0, -3 (C) -4, -1 (D) 4,-1 13) Which of the following statements best describes the following augmented matrix? 6 (A) A is consistent with a unique solution. (B) A is consistent with infinitely many solutions. (C) A is inconsistent. (D) none of the above. 14) If the matrix A is 4 * 2, B is 3 x 4, C is 2 x 4, D is 4 x 3, and E is 2 x 5, which of the following expression is (are) not defined? (A) A' D + CB (B) (B + D' )A (C) CA + CB (D) BDAE 15) Which of the following matrices is not an elementary matrix? 23 A = B =1 7 1 C= 1 0 D = 0 -15 0 0 0 0 (A) D (B) C (C) B (D) A

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