Determine if the matrix below is invertible. Use as few calculations as possible

Question

Determine if the matrix below is invertible. Use as few calculations as possible. Justify your answer. 1 -3 7 -3 60 Determine if the matrix below is invertible. Use as few calculations as possible. Justify your answer O A. The matrix is invertible. The given matrix is not row equivalent to the nx n identity matrix. O B. The matrix is not invertible. In the given matrix the columns do not form a linearly independent set. O C. The matrix is not invertible. If the given matrix is A, the equation Ax - b has no solution for at least one b in R3 O D. The matrix is invertible. The given matrix has 3 pivot positions.

Explanation / Answer

( D) We can convert the given matrix in echelon form by using the following row operations :

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