Matrix Operations - Determinants, Co-factors, Adjoints

This unit focuses on understanding determinants, cofactors, and adjoint matrices, and will teach the following skills:

• Construct the cofactor matrix
• Calculate cofactors of a matrix
• Calculate minors of a 3 by 3 matrix
• Identify the minor associated with a matrix element
• Construct the matrix of minors
• Determine the sign of a cofactor from its position
• Expand a determinant along a specified column
• Calculate the determinant of a 3 by 3 matrix using cofactor expansion
• Determine the adjugate of a matrix