ENGR 351 Numerical Methods for Engineers
College of Engineering
Southern Illinois University Carbondale

Name ________________________________________

Quiz

Given the following matrix, calculate the determinant by expanding around the 2^nd row. The following definitions and equations should be helpful.

Minor: the minor of an entry a_ij is the determinant of the submatrix obtained by deleting the ith row and the jth column

Cofactor: the cofactor of an entry a_ij of an n x n matrix A is the product of (-1)^i+j and the minor of a_ij