Cofactor Matrix Calculator

Compute the cofactor matrix for a 3x3 matrix using the alternating sign pattern. Returns the full cofactor matrix.

Enter Values

a11

a12

a13

a21

a22

a23

a31

a32

a33

Enter values above and click Calculate to see your result.

AI Assistant

Ask about this calculator

I can help you understand the cofactor matrix calculator formula, interpret your results, and answer follow-up questions.

Try asking

C_{ij} = (-1)^(i+j) M_{ij}

Each cofactor is the signed minor determinant for that position. The sign pattern alternates like a checkerboard.

Enter a 3x3 matrix. The calculator returns the cofactor matrix.

A minor Mij is the determinant of the matrix formed by removing row i and column j.

The adjoint matrix is the transpose of the cofactor matrix and is used in inverse calculations.

AI Assistant

Ask about this calculator

I can help you understand the cofactor matrix calculator formula, interpret your results, and answer follow-up questions.

Try asking

Plot 2D functions and algebraic equations.

Graph and shade mathematical inequalities.

Visualize and calculate function transformations.

Convert quadratics to vertex form step by step.

Accurate and Reliable

All calculations run locally. Solve equations with confidence using AI-verified methods.