10 k 0 1 5 11. Let A = Find the value of k so that the matrix A does not have an inverse? -2 0 6 (А) —3 (В) 3 (C) 6 (D) 0 (E) -6 (F) None of the above

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Please select the correct answer and explain in detail your reasoning.

11. Let \( A = \begin{bmatrix} 1 & 0 & k \\ 0 & 1 & 5 \\ -2 & 0 & 6 \end{bmatrix} \). Find the value of \( k \) so that the matrix \( A \) does not have an inverse.

(A) \(-3\)  
(B) \(3\)  
(C) \(6\)  
(D) \(0\)  
(E) \(-6\)  
(F) None of the above  

This question involves finding the value of \( k \) for which the given \( 3 \times 3 \) matrix does not have an inverse, which occurs when the determinant of the matrix is zero. The matrix \( A \) is defined as:

\[ \begin{bmatrix} 1 & 0 & k \\ 0 & 1 & 5 \\ -2 & 0 & 6 \end{bmatrix} \]
Transcribed Image Text:11. Let \( A = \begin{bmatrix} 1 & 0 & k \\ 0 & 1 & 5 \\ -2 & 0 & 6 \end{bmatrix} \). Find the value of \( k \) so that the matrix \( A \) does not have an inverse. (A) \(-3\) (B) \(3\) (C) \(6\) (D) \(0\) (E) \(-6\) (F) None of the above This question involves finding the value of \( k \) for which the given \( 3 \times 3 \) matrix does not have an inverse, which occurs when the determinant of the matrix is zero. The matrix \( A \) is defined as: \[ \begin{bmatrix} 1 & 0 & k \\ 0 & 1 & 5 \\ -2 & 0 & 6 \end{bmatrix} \]
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