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A=[{:(1,2,-1),(0,1,3),(1,2,-1):}] Find t...

`A=[{:(1,2,-1),(0,1,3),(1,2,-1):}]` Find the adjoint of A.

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To find the adjoint of the matrix \( A = \begin{pmatrix} 1 & 2 & -1 \\ 0 & 1 & 3 \\ 1 & 2 & -1 \end{pmatrix} \), we will follow these steps: ### Step 1: Find the Cofactor Matrix The cofactor \( C_{ij} \) of an element \( a_{ij} \) in a matrix is given by: \[ C_{ij} = (-1)^{i+j} M_{ij} ...
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