2x2 Determinants - Concept

Concept Concept (1)

Determinants are useful properties of square matrices, but can involve a lot of computation. A 2x2 determinant is much easier to compute than the determinants of larger matrices, like 3x3 matrices. To find a 2x2 determinant we use a simple formula that uses the entries of the 2x2 matrix. 2x2 determinants can be used to find the area of a parallelogram and to determine invertibility of a 2x2 matrix.