How to find the invertible matrix? There are many methods, such as adjoint matrix method, row (column) elementary transformation and so on. Finding its inverse matrix by adjoint matrix method;

The first step is to judge whether the matrix given by the topic is reversible.

Second, find the algebraic cofactor of the matrix, A 1 1, A 12, A 13, A2 1, A22, A32, A3 1, A32, A33.

The third step is to find the adjoint matrix.

The fourth step is to find the inverse matrix.

The calculation results are as follows.