Before finding the inverse of a matrix, we first define its:

Question

Accepted Answer

C. Adjoint

1. The inverse formula needs another matrix built from cofactors.
2. That matrix is defined first.
3. It is the adjoint of the matrix.
4. So the answer is the adjoint.
_Source: syllabus Mathematics, Ch 4 'Determinants'_

Answer

Transpose

Answer

Trace sum

Answer

Diagonal

Before finding the inverse of a matrix, we first define its:

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