Identity Matrix

The identity matrix I is a square matrix with 1s on the main diagonal and 0s everywhere else, for example ⎡1  0⎣⎡0  1⎣. Multiplying any matrix A by the identity matrix leaves A unchanged: AI = IA = A.

Check a true/false fact about the identity matrix, or apply the identity property.

Continue exploring related topics:

• Matrix Multiplication
• Determinants
• Types of Matrices