Skip to content
Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

singular matrix

A square matrix with determinant zero — it has no inverse.

A singular matrix is a square matrix whose determinant equals 0. Singular matrices never have an inverse, since the inverse formula requires dividing by the determinant, and their rows are proportional — the linear system they represent has no unique solution.

See also

determinant
Read the full section →
Graph settings

Calculator