If $$\det(A) \neq 0$$, inverse exists:
$$A^{-1} = \frac{1}{\det(A)} \mathrm{adj}(A)$$.
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CAT Formulas
Matrices & Determinants
Inverse of a Matrix
If $$\det(A) \neq 0$$, inverse exists:
$$A^{-1} = \frac{1}{\det(A)} \mathrm{adj}(A)$$.
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