2x2 Inverse Matrix Calculator
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| Adjoint matrix (Adj(A)) |
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| A -1 |
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Inverse matrix: Let A be an n-order square matrix in the number field. If there exists another n-order matrix B in the same number field, such that: AB=BA=E. Then we call B the inverse matrix of A, and A is called a reversible matrix. The necessary and sufficient condition for A to be a reversible matrix is |A|≠0, that is, the reversible matrix is a non-singular matrix. (When |A|=0, A is called a singular matrix.
Inverse matrix formula:
The calculation method is as follows:
