Let A = [ 2 1 ? 1 2 ] , a) Find adj A. b) Compute det(A). c...
Adjugate of a Matrix: Adjugate of a square matrix is transpose of its cofactor matrix. For any {eq}2 \times 2 {/eq} square matrix, we can write the adjugate as shown below: Let, {eq}A= \begin{bmatrix} a & b \\ c & d \\ \end{bmatrix}...