The inverse of A is the matrix A⁻¹ such that AA⁻¹ = I. Like 1/x for matrices.
2×2 inverse
[a b; c d]⁻¹ = (1/(ad−bc)) [d −b; −c a]
If determinant = 0, the matrix has no inverse — it's singular.
The inverse of A is the matrix A⁻¹ such that AA⁻¹ = I. Like 1/x for matrices.
If determinant = 0, the matrix has no inverse — it's singular.