👉 A determinant is a square matrix that plays a crucial role in linear algebra. It's used to calculate the values of certain mathematical expressions, such as the determinant of a 2x2 matrix or a 3x3 matrix. Determinants can be defined using various mathematical operations. For instance, when you have two rows and columns (e.g., a 3x3 matrix), you can use matrix multiplication to get an expression that involves only the entries in those two rows and columns. This
