MATRICES ALGEBRACOFACTOR EXPANSION; CRAMER’S

RULE

Minors and Cofactors

Cofactor Expansion

Adjoint of A Matrix

Formulator For The Inverse Of A Matrix

Cramer’s Rule

Let’s Us Doing The Exersice !!

3. Evaluate the determinant of the matrix by a cofactor expansion along a. The second column b. The third row

4. For the matrix, find adj (A) and A inverse using 2.1.2

5. Evaluate det (A) by a cofactor expansion along a row or column of your choice

Thank You For Your Attention

Wassalamu’alaikum Wr. Wb.