If `A=[{:(3,2,1),(0,-1,-2),(-3,4,2):}]`, find `A^(-1)`

Explanation

To find the inverse of the matrix \( A = \begin{pmatrix} 3 & 2 & 1 \\ 0 & -1 & -2 \\ -3 & 4 & 2 \end{pmatrix} \), we will follow these steps:

### Step 1: Calculate the Determinant of \( A \)

The determinant of a \( 3 \times 3 \) matrix \( A = \begin{pmatrix} a & b & c \\ d & e & f \\ g & h & i \end{pmatrix} \) is given by:

\[
\text{det}(A) = a(ei - fh) - b(di - fg) + c(dh - eg)
...