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Question: If A = \(\begin{bmatrix} 0 & 1 & 2 \\ 1 & 2 & 3 \\ 3 & a & 1 \end{bmatrix}\)& A<sup>–1</sup> = \(\be...

If A = [0121233a1]\begin{bmatrix} 0 & 1 & 2 \\ 1 & 2 & 3 \\ 3 & a & 1 \end{bmatrix}& A–1 = $\begin{bmatrix} 1/2 & - 1/2 & 1/2 \

  • 4 & 3 & C \ 5/2 & - 3/2 & 1/2 \end{bmatrix}$then values of a & c are
A

–1, 1

B

1, 2

C

1, –1

D

None

Answer

1, –1

Explanation

Solution

Use A.A–1 = I